查询词典 black in the face
- 与 black in the face 相关的网络例句 [注:此内容来源于网络,仅供参考]
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It solves the problem that the unitary contour presentation can not correctly extract face contour in a face image which suffers from scale, rotation etc. The definition of the internal and external energy function is provided. At the same time, the global matching algorithm and local matching algorithm is given. The experiment shows that this presentation and the accompanying matching algorithm can be used to extract the face contour very well. So the image segmentation can be implemented by using it.②By analyzing the recognition principle of PCA method, we can conclude that the face images coming from different surrounding consist of different face image space. This is the essential reason that makes the generality of PCA method worse. Also, we give a measurement means to measure the distance from different face image space, so we can analyze face image space more conveniently.③We also construct various scale models and rotation pose models to detect the scale and rotating angle of face image to be recognized. The experiment results show that the detecting precision is very high. So it is good for face image feature extraction and face image representation.④Similarly, we construct local feature models of face image and utilize them to detect the local feature of face image. At the same time, we put forward a novel face image local feature detection algorithm, locating step by step. The experiment results show that this method can accurately detect the location of local face feature in a image.⑤A novel face image presentation model, dual attribute graph , is put forward. Firstly, it utilizes attribute graph to present the face image, then exact the local principal component coefficient and Gabor transform coefficient of thc pixels which corresponds to the nodes of the graph as the attribute of the nodes. This representation fully makes use of the statistical characteristic of the local face feature and utilizes Gabor transform to present the topographical structure of face image. So DAG has more general property.⑥Based on the DAG presentation, we give a DAG matching function and matching algorithm. During the design of the function and algorithm, the noise factor, e. g., lighting, scale and rotation pose are considered and tried to be eliminated. So the algorithm can give more general property.⑦A general face image recognition system is implemented. The experiment show the system can get better recognition performance under the noise surrounding of lighting, scale and rotation pose.
本文在上述研究的基础上,取得了如下主要研究成果:①构造了一个通用的人脸轮廓模型表示,解决了由于人脸图象尺度、旋转等因素而使得仅用单一轮廓表示无法正确提取人脸轮廓的问题,并给出了模型内、外能函数的定义,同时给出了模型的全局与局部匹配算法,实验表明,使用这种表示形式以及匹配算法,能够较好地提取人脸图象的轮廓,可实际用于人脸图象的分割;②深入分析了PCA方法的识别机制,得出不同成象条件下的人脸图象构成不同的人脸图象空间的结论,同时指出这也是造成PCA方法通用性较差的本质原因,并给出了不同人脸空间距离的一种度量方法,使用该度量方法能够直观地对人脸图象空间进行分析;③构造了各种尺度模板、旋转姿势模板以用于探测待识人脸图象的尺度、旋转角度,实验结果表明,探测精确度很高,从而有利于人脸图象特征提取,以及图象的有效表示;④构造了人脸图象的各局部特征模板,用于人脸图象局部特征的探测;同时提出了一种新的人脸图象局部特征探测法---逐步求精定位法,实验结果表明,使用这种方法能够精确地得到人脸图象各局部特征的位置;⑤提出了一种新的人脸图象表示法---双属性图表示法;利用属性图来表示人脸图象,并提取图节点对应图象位置的局部主成分特征系数以及Gabor变换系数作为图节点的属性,这种表示方法充分利用了人脸图象的局部特征的统计特性,并且使用Gabor变换来反映人脸图象的拓扑结构,从而使得双属性图表示法具有较强的通用性;⑥在双属性图表示的基础上,给出双属性图匹配函数及匹配算法,在函数及算法设计过程中,考虑并解决了光照、尺度、旋转姿势变化等因素对人脸图象识别的影响,使得匹配算法具有较强的通用性;⑦设计并实现了一个通用的人脸图象识别系统,实验结果表明,该系统在图象光照、尺度、旋转姿势情况下,得到了较好的识别效果。
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Canister of chic circle colour is gradually layer colour tries advanced bronzing font, the lid opens after outside, it is the one seal cover with easy ring tab additionally, the design is original, provide completely moistureproof function, perfect the optimal gust that saves India to produce handpick and top class black tea formerly,(This packs optional choose tea to taste have India the 3 big Jiling black tea that produce a division greatly, black tea of A Sa Mu, black tea of Ni Erji benefit and black tea of various and classical gust, be like black tea of case thunder count, malic gust black tea, mango gust black tea, black tea of gust of 100 sweet fruit, pineapple gust black tea, black tea of field mint gust, strawberry gust black tea, caramel gust black tea, black tea of integrated fruit gust, black tea of apricot peach special flavor and black tea of honey peach gust are waited a moment) black tea of top class and high grade India, but pure taste or inspect be fond of to add trifling milk, candy or honey add different special flavor.
别致的圆型彩罐为渐层色彩加以高级烫金字体,外盖打开後,另为一附有易拉环之密封盖,设计新奇,并具完全防潮功能,完美保存印度原产精选顶级红茶的最佳风味,(此包装可选择茶品有印度三大产区之大吉岭红茶,阿萨姆红茶,尼尔吉利红茶以及各式经典风味红茶,如格雷伯爵红茶,苹果风味红茶,芒果风味红茶,百香果风味红茶,凤梨风味红茶,薄荷风味红茶,草莓风味红茶,焦糖风味红茶,综合水果风味红茶,杏桃风味红茶及水蜜桃风味红茶等等)顶级优质印度红茶,可纯品或视喜好添加些许牛奶,糖或蜂蜜增添不同风味。
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A magnetic source and condenser for protecting a pipe, ionizing any fluid flowing therein, and ionizing any dissolved and suspended solids in such fluid, comprising:a magnetic source including a magnet having a pair of opposed planar major faces and a planar minor face extending between said major faces and perpendicular to said major faces,said magnet being charged so that one of said major faces is a south pole and the other of said major faces is a north pole,a magnetic condenser a pair of pole pieces, each of said pole pieces having a pair of opposed planar major faces, one of which is an inner major face and the other of which is an outer major face, the area of said inner major faces being equal to that of the major faces of said magnet, the area of said outer major face being larger than each of said major faces of said magnet,said pole pieces being positioned on opposite sides of said magnet such that said pole pieces sandwich said magnet, said inner major face of each pole piece is contiguous with and completely covers an entire major face of said magnet, and said outer major face of each pole piece faces away from said magnet,each pole piece having an integral foot extending perpendicularly to said inner major face of each pole piece such that said pole pieces have two respective integral feet which extend toward each other and are substantially coplanar, each foot having a distal and a proximal surface with respect to said magnet, each foot having an end which is spaced from the end of the opposite foot,said distal surface of each foot having a predetermined concave curvature which will conformingly mate with an outside surface of a pipe having a predetermined convex curvature,said proximal surface of each foot being contiguous with said minor face of said magnet
我要求: 1。一台磁性来源和冷凝器为保护管子,电离任何流体流动在其中,和电离任何被溶化的和暂停的固体在这样的流体里,包括:一个磁性来源包括磁铁有一对被反对的平面主要面孔和一张平面较小面孔延伸在前述主要面孔和垂线之间对前述主要面孔,前述磁铁被充电以便前述主要面孔的当中一个是南极并且其他前述主要面孔是北极,一台磁性冷凝器每对杆片断,每个前述杆片断有一对被反对的平面主要面孔,其中之一比每个是是一张外面主要面孔的一张内在主要面孔和其他,前述内在主要面孔区域是相等的与那前述磁铁,前述外面主要面孔区域的主要面孔大的前述磁铁的前述主要面孔,前述杆片断被安置在前述磁铁的反面这样,前述杆片断三明治认为磁铁,各个杆片断的前述内在主要面孔是接触的与和完全地包括前述磁铁的一张整个主要面孔,和各个杆片断面孔的前述外面主要面孔从前述磁铁,各个杆片断有一只缺一不可的脚垂直地延伸对各个杆片断的前述内在主要面孔这样,前述杆片断有延伸往彼此和极大地coplanar 的二各自缺一不可的英尺,各只脚有末端和接近表面谈到前述磁铁,各只脚有被间隔从相反脚的末端的末端,各只脚前述末端表面有与管子一个外表面conformingly 将联接有被预先决定的凸面曲度的被预先决定的凹面曲度,各只脚前述接近表面是接触的与前述磁铁的前述较小面孔
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Habitancy office is adjusted in the adjustment there existing the job there being existed in the heart in middle central section crack quilt being able to bear the messenger who stores in there assuming a zero holding a post being paying court to the pair delivering letter to being new leaf proper existence face do it do thing fulfill carve print hand letter middle there middle early morning face expression respect face oneself a rich man system compose replace face existence system compose existence change become a circle what come to face a come to a climax middle make hiascent come down upper existence there neighbouring hold a post pay court to deliver letter a little nature fabrication be work effort Hold a post to the right office centre part making an inventory of stock paying court to deliver letter Yan makes hiascent hold out firmly from inside right hand to the price there being existed in oneself face from the crack rotating by the complement holding a post paying court to there being sent to be that comfort station space is staunch to value on paying attention to the value that existence directs on to expressing a respect to existence to staying by the foster son batting hand that faction secondary inside office face go to there fulfill slice meat print hand hand write carve print hand letter all kinds of strike existence degree face recipient make hiascent come down on upper staunch firmly hold out secondary inside office Kaiate son captain indicating that to expressing a respect to faction in adjacent there
Habitancy 办公室被调整适应在中调整那里存在工作那里存在被存在在中心脏在中中部中心部分使裂开缝被存在对能承受得了送信人谁商店在中那里僭越的 a 作归零校正支持住 a 杆存在向表示敬意向结对履行刻印刷体字母向存在对是新树叶本身存在朝做它做东西履行切肉印刷体手写字刻印刷体字母中部那里中部一大早朝表达尊重朝自己 a 富有男人系统创作用取代朝存在系统创作存在改变成为 a 盘旋什么来向朝 a 来向 a 达到高潮中部hiascent 来下来鞋帮存在那里邻近的支持住 a 杆向表示敬意向履行刻印刷体字母一点本质制造是使工作的为所作的努力支持住 a 杆向的权利办公室居中分开制造一具有清单所示价值的股票向表示敬意向履行刻印刷体字母 Yan 制造 hiascent 支持住从里面坚定从右内锋手向价格那里存在被存在在中自己朝从使裂开使轮换偏于表现彬彬有礼支持住 a 杆向表示敬意向那里存在寄送由转的向是那个公共厕所空间是对结实对的价值在上注意向对的价值那个存在指挥在上向明确尊重向存在向留下偏于义子击球手那个派别相对次要内部办公室朝去向那里履行斜击肉印刷体手写字手写作切肉印刷体手写字刻印刷体字母各种各样的打击存在度朝受主制造 hiascent 来下来在上鞋帮结实坚定支持住从里面相对次要内部办公室 Kaiate 儿子首领指示那个向明确 a 尊重向派别在中邻近的那里
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Characters in order of appearance: Deadpool, Arcade, Basilisk, Ares + Hercules, Nova, Annihilus, Ant-Man, Ms. Marvel, Baron Zemo, Black Box, Ghost Rider, Black Goliath, Black Bolt, Beta Ray Bill + skrull, Norman Osborn/ Green Goblin, Thunderbolts (Venom + Bullseye + Songbird), Nightcrawler, Juggernaut, Black Tom Cassidy, Agency X (a guy I don't know, Outlaw, Agent X, Taskmaster, a girl I don't know), Air Walker, Gambit + Bishop, High Evolutionary, Baron Von Strucker, Mighty Avengers (Jocasta + Scarlet Witch + Wasp/ H. Pym), New Avengers (Spider-Man + Ronin + Ms. Marvel + Luke Cage + Captain America/ Bucky + Spider-Woman + Wolverine), Eel, Dr. Strange, Ajak, Generation X (Jubilee + Husk + Synch + Skin + M + Chamber), Angel, Hulk, Fing Fan Foom + Hulk, Belasco + Illyana Rasputin, Shadowcat, Omega Red, Vulture, Young Avengers (Vision + Wiccan + Patriot + Hulkling + Hawkeye + Speed), Ms. Marvel + Jean Grey + Mr. Fantastic + Wolverine + Captain America + Iron-Man + Invisible Woman + Thing + Spider-Man + Charles Xavier, Abomination, Thanos + Galactus, Blastaar, Aegis, Thor + Captain America/ Bucky + Wolverine, Atlas, Avalanche, Avengers (Thor + Iron-Man + Captain America + Scarlet Witch + Ant-Man + Wasp), Baron Zemo + Avengers (Captain America + Thor + Giant-Man), Prodigy + Batwing + Sunstreak + Gorilla Girl + Boulder + Annex, Banshee, Arana, Cyclops + Professor Xavier, Green Goblin + Spider-Man, Kang The Conqueror, Nick Fury, Northstar + Cyclops, Northstar + Aurora, Punisher, Iron Fist, Thor, Black Goliath, X-Men (Banshee + Angel + Iceman + Cannonball + Warpath + Cyclops + Colossus + Beast + Bishop + Longshot + Cable + Wolverine + Nightcrawler + Havok + Gambit), Storm, Fantastic 4 (Invisible Woman + Human Torch + Thing + Mr. Fantastic)+ Black Panther + Storm, Gambit + Wolverine, Captain America + Logan, a kree + Ms. Marvel + Captain Marvel + Captain Marvel + Avengers (Giant-Man + Hulk + Captain America + Thor + Wasp), X-Statix (Dead Girl + Mr. Sensitive + U-Go Girl + Saint Anna + Venus Dee Milo), Black Panther, Swordsman, Iceman + Iron-Man + Human Torch + Spider-Man + Colossus + Nightcrawler + Quicksilver + Wolverine + Captain America + Hulk + Mr. Fantastic + Thor + Storm + Thing, Shadowcat + Rogue, Whiplash, X-Corps (Avalanche + Blob + Banshee + Husk + Jubilee), Adam X, Crimson Dynamo, Mr. Sinister, Agents Of Atlas (the Uranian + M-11 + Jimmy Woo + Namora + Venus + Gorilla Man), Apocalypse, Taskmaster, Agent 0 + Wolverine, Battlestar, Baron Mordo, Batwing + Spider-Man, Union Jack, Ancient One, Arclight, Anole, Iron-Man.
享受! 在外观订购特点:Deadpool,商场,虺蛇,战神+大力神新星,Annihilus,蚁民,女士惊奇,男爵泽莫,黑盒,幽灵骑士,黑巨人,黑螺栓Skrull +β射线条例草案,诺曼奥斯本/绿精灵,桑德博茨,Nightcrawler,剑圣,黑色汤姆卡西迪,代理第十章(一家伙,我不知道,奥特洛,X制剂,工头,一个女孩,我不知道),空气沃克,开局+主教,高级进化,男爵冯施特吕克尔,全能的复仇者(乔卡斯塔+大红女巫+黄蜂/ H的皮姆),新复仇者(蜘蛛侠浪人+++女士惊奇笼+美国队长卢克/布基+蜘蛛女+狼獾),鳗鱼,博士奇怪,阿贾克, X一代(银禧+壳+同步+皮肤+ M +的商会),天使,绿巨人,Fing头范宽+绿巨人,贝拉斯科+ Illyana拉斯普京,Shadowcat,欧米茄红色,雕,杨复仇者(视觉+ Wiccan +爱国者+ Hulkling +霍克艾尔+速度),让灰色女士惊奇+++金刚狼+奇先生美国队长+铁人+隐形女+物+蜘蛛侠+查尔斯泽维尔,憎恶,萨诺斯+ Galactus, Blastaar,宙斯盾,索尔+美国上尉/布基+金刚狼,阿特拉斯,雪崩,复仇者(索尔+铁人+美国队长+女巫+大红蚂蚁满+黄蜂),男爵泽莫+复仇者(美国上尉雷神++巨男子),神童+蝙蝠翼+ Sunstreak +大猩猩女+博尔德+附件,女妖,阿拉纳,独眼巨人+泽维尔教授,绿精灵+蜘蛛侠,康的征服者,尼克骚动,诺斯斯塔+独眼巨人,诺斯斯塔+极光,惩罚者,铁拳,雷神,黑巨人,X战警(女妖+天使+冰人+独眼巨人++沃帕斯巨像+野兽+主教+朗肖特+电缆++金刚狼+ Nightcrawler Havok的开局坎南伯尔++),风暴,神奇四(看不见的女人+人力火炬+物+神奇先生)+黑豹+风暴,开局+金刚狼,美国队长+洛根,1 kree女士惊奇++船长船长惊奇Marvel公司++复仇者(巨人+绿巨人+美国队长+雷神+黄蜂)和X - Statix(敏先生死亡女孩++ U型转到女孩安娜++圣迪米罗维纳斯),黑豹,武侠小说,冰人+铁人+人力火炬+蜘蛛侠+巨像+ Nightcrawler +水银+金刚狼+美国队长+绿巨人+神奇先生风暴+++雷神物,Shadowcat +盗贼,头颈部,阿特拉斯的X团(雪崩+斑点+女妖+壳+银禧),亚当十,深红迪纳摩,邪恶先生,代理商(即天王星+的M - 11 ++纳莫拉+麦宇金星+大猩猩人),启示,监工,代理0 +狼獾,太空堡垒,男爵莫尔多,蝙蝠翼+蜘蛛侠,米字旗,古一,ArcLight的,变色龙,铁人。
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Editorial note: Previous studies on black milk and tea polyphenol absorption were mixed in their findings, but this study tilts the health recommendations back in the direction of drinking one's black tea "black", without milk. This is actually not hard to do if you buy a very nice quality loose leaf black tea, but if you purchase only lower quality "fannings" in tea bags, you will find the black tea to be fairly bitter, especially if it is a stronger brew. For those of you who wonder whether you can drink black tea without milk, I suggest you call Strand Tea at 1-888-718-6358 to buy a small trial amount of their Darjeeling Makaibari Estate biodynamically grown Black tea - it's fragrant and very smooth, one of my favorites, and I hope Jack Strand doesn't sell out of it - tell him Dr. Z sent you.
编者按:以往的研究对黑牛奶和茶多酚吸收混在他们的调查结果,但这种研究倾斜的健康建议,在回方向的喝的红茶中的"黑",不加牛奶,其实这并不难做到如果你购买了一个非常好的品质松散叶红茶,但如果你只购买低品质" fannings "茶叶袋,你会发现,红茶可算是相当痛苦的,尤其是如果它是一个强大的BREW对于你们这些人不知您是否可以喝红茶加牛奶,我建议你致电钢绞线茶在1-888-718-6358买一个小型审判其数额大吉岭makaibari地产biodynamically成长红茶-它的香味,很顺利的,其中一个我的最爱,我希望千斤顶钢绞线不出售了它-告诉他,叶文z传送给你。
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1St Week: A general introduction to the nature and contents of the course; an investigation of students' acquired knowledge of literature in general; a brief introduction to African-American literature 2nd and 3rd Weeks: Rediscovering an Invisible Culture (Why Black culture had been unknown and unobserved for several decades; how it came to be rediscovered ) 4th to 6th Weeks: Double Consciousness (the marginal perspective in Language, Oral Culture, Folklore and Religion); Reading representative works by three Black writers of racial consciousness: Douglass, Washington and Bu Bois 7th to 9th Weeks: Minstrelsy (Imitation, Parody and Travesty in Black-White interaction rituals 1830--1920); Reading the novel about the Black life: Uncle Tom's Cabin 10th to 12th Weeks: Social Mobility and Cultural Stigma: The case of Chicago Jazz 1920--1930; Reading poems by Hughes and novels by Wright 13th to 15th Weeks: Oral Tradition and the Quest for Literacy: The crisis of Black writers from Philips Wheatley to Ralph Ellison; Reading the masterpiece of Ellison 16th to 18th Weeks: Contemporary Afro-American Culture: the sixties and seventies (efforts on reconstructing the Black identiy and Black history); Reading novels by Morrison
第1周:介绍课程性质、内容,了解学生相关文学背景,简要概括黑人文学历史第2-3周:再现黑人文化(黑人文化长期被掩盖的事实和原因,重新被发现的原因和过程)第4-6周:双重意识(语言、吟唱文学、民俗民谣、宗教的边缘化),阅读黑人种族意识三代伟大启蒙家道格拉斯、华盛顿、杜波伊斯的代表作第7-9周:吟游文学(黑人与白人的文化互动过程中的模仿、戏仿、曲仿),阅读第一部反映黑人生活的小说《汤姆叔叔的小屋》第10-12周:社会动荡与文化耻辱(芝加哥爵士乐的兴起、流行和影响),阅读休斯和赖特的代表作第13-15周:口头文学传统与争取教育权利的斗争(从惠特利到埃里森的黑人作家危机),阅读拉尔夫·埃里森的代表作第16-18周:六、七十年代以来的美国黑人文化(重建身份和重建历史的努力),阅读莫里森的代表作每位参加该课程学习的学生均须严格出勤,按时完成学读任务,每学期主持两次小型(10分钟)学术报告,第一次针对老师推荐的作家作品做一个专题报告,第二次针对自己的学期研究计划做一个选题前瞻性和可行性报告。
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The results show that:First, concentration of hydrogen peroxide have the most obvious influence to oil yield and carbon black yield,with the increase of concentration of hydrogen peroxide the oil yield first increase then decrease,when concentration of hydrogen peroxide is 8.19% or so,the oil yield reach to the biggest value, and with the increase of concentration of hydrogen peroxide carbon black yield decrese;Then,reaction time have more obvious influence to oil yield and carbon black yield,oil yield increase but carbon black yield decrease with the increase of reaction time;Thirdly,reaction tempreture have some influence to oil yield and carbon black yield,samely,oil yield increase but carbon black yield decrease with the increase of reaction tempreture;Finally,reaction pressure does almost no influence on oil yield and carbon black yield.
研究结果表明:过氧化氢质量浓度对产油率和炭黑产率的影响最为显著,产油率随过氧化氢质量浓度的提高先提高后降低,在过氧化氢质量浓度为8.19%左右时达到最大值,炭黑产率随过氧化氢质量浓度的提高而降低;反应时间对产油率和炭黑产率的影响也比较显著,产油率随反应时间的增加而提高,炭黑产率随反应时间的增加而降低;反应温度对产油率和炭黑产率也有一定的影响,产油率随反应温度的提高而相应地提高,炭黑产率随反应温度的提高而降低;在本文实验范围内,反应压力对产油率和炭黑产率基本上没有影响。
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Wretched of the smiling black beard, white beard no such helplessness, knife Kanxiang black beard, said that the Navy wanted me Banzhang Lian, I have killed a great general, today I use the other side of the face to your life, black beard Shemale subordinates bomb away with the chest that Daoqi, black-bearded giant Ka Buda men shot, but was stopped Kapur, saying that the child you are rusty in prison, and let me do you, audience shocked, card Poor's anger into energy and a punch in the Ka Buda's eyes, eyes fell initially, but soon black-bearded men of the magician-based bar bang is heard, Ka Buda has sprouted eyes, black beard, a sinister smile.
黑胡子猥琐的笑着,白胡子无此的无奈,一刀砍向了黑胡子,说海军要了我半张脸,我杀了一大将,今天我就用另一边脸要你的命,黑胡子手下的人妖用胸部弹走了那刀气,黑胡子的手下巨人卡布达出手,却被卡普拦住了,说孩子你在监狱生锈了,让我来干你吧,全场震惊,卡普把愤怒化为力量一拳打在卡布达的眼睛,当初眼珠掉下,但很快黑胡子手下的魔术师基吧嘣的一声,卡布达又长出了眼睛,黑胡子奸笑着。
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A new 3D human face model is put forward in this paper after some characters of the human face and the muscle tissues on the face are researched and some actions of the facial expression are analyzed. In this model we divide the whole face into some parts according to its structure. To each part, we apply the principle of elastomer metamorphosing to our face model, so a specific face model can be easily gotten by modifying a common face model.
本文在分析和总结了前人工作的基础上,深入研究了人脸的生理特征、面部肌肉组织结构,分析了人脸面部表情的基本动作,提出了将人脸整体分解为若干个小块的三维人脸几何模型,并根据力学中的弹性体形变原理,将弹性体的形变应用于上述基于面分块的三维人脸几何模型,使特定人脸几何模型的建立变得简单、效率高。
- 相关中文对照歌词
- L'unité
- Katie's Tea
- Tată (Father - Romanian Version)
- Te-Am Visat
- La Colline Des Roses
- Black Cocaine
- All Black
- La Dance Ghetto
- Black Diamonds
- Black Tee
- 推荐网络例句
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Alternatively, the con- trollers can use the synchronous rectifier itself or loss- less inductor current-sensing methods to provide overload protection with lower power dissipation.
另外,康威特罗勒斯可以使用同步整流器本身或亏损减少电感电流检测方法,以提供低功耗过载保护。
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Mr. Dauber's other Schatz hangs in his home movie studio.
多伯把沙兹的另一件作品挂在家里的电影室。
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Most foreign trading companies in West Africa deal in rubber, cocoa and vegetable oil.
非洲西部大多数的外贸公司都是经营橡胶、可可和菜籽油。