前后向的

基本解释 (translations)

sagittal

与前后向的相关的网络例句 [注：此内容来源于网络，仅供参考]

The Radar Cross Section of an S-shaped circular wave guide and that coated with absorber layer on the inner wall are computed by the fast Iterative Physical Optics method using algorithms of initial value succession and Forward-Backward Iterative.

在此基础上采用初值继承算法和前后向迭代结合的快速IPO方法计算了采用S弯和在腔体内壁涂敷吸波材料对腔体雷达截面的减缩效果。

The diagnostic features for the species include deep excavation on the posteroventral margin of the premaxilla, a diastema between the premaxillary and maxillary teeth, a a number of many pits and ridges on the anterolateral surface of the antorbital fossa, the posterolateral process of the parietal being long and sharply posteriorly directed, the column ar -like margin of the pterygoid process of the quadrate, the bifurcated posterior margin of the dentary, a distinctive groove posterior to the anterior carina on the medial surface of the premaxillary tooth crowns, absence of ventrolateral processes on intercentrum of t he atlas, T-shaped centrum of the first caudal in ventral view, transverse process on anterior caudals with rounded , and strongly anteroposteriorly expanded distal end, presence of two fossae separated by an oblique ridge on the lateral side of the anterior chevrons near the articular end, and pubis strongly curved psoteriorly.

这一属种的主要鉴定特征包括：前上颌骨后腹缘有一深凹、前上颌齿和上颌齿之间有一齿缺、眶前窝外表面前部有许多坑窝和脊、顶骨侧后突伸向后方、方骨的翼骨支边缘柱状、靠近前上颌齿齿冠舌面前缘有槽、环椎间椎体外腹突缺失、第一尾椎椎体腹视 T 形、前部尾椎横突远端前后向强烈扩展呈圆形、前部脉弧近端外侧面有两个被一斜脊分离的窝以及耻骨强烈向后弯曲。通过分析千禧中国鸟龙的96个骨骼学特征，发现其中21个特征支持奔龙类与鸟类的亲缘关系最近，9个特征支持奔龙类与伤齿龙类亲缘关系最近，25个特征支持奔龙类、伤齿龙类和鸟类亲缘关系较为接近。

The adjuster that moves the seat up and down and from front to rear is called a four-way adjuster.

能够把座位升高、降低和向前后倾斜的调节器叫做"四维调节器"。

RESULTS: The self-prepared 3-D external distractor was 30 g. The lengthener was built to provide 3-D suture expansion osteogenesis by changing the direction. The expansion bar could be moved about 2 cm in anteroposterior axes, 3.5 cm in perpendicular axes, 3 cm in coronal axes.

结果：自行研制的三维缝牵张器重量30 g，牵张杆前后向移动2 cm左右，上下方向移动3.5 cm左右，向外移动3 cm左右，牵张控制准确，三维变向简便易行。

Results: The nose of man is more protrusive and the chin is more retrognathic.

结果：本地区正常年青成人的软组织侧貌男、女不同，男性在鼻、唇、颏三者前后向的关系较女性明显，女性则趋于直面型。

We also observed an anteroposterior migration of medial edge epithelial cells, which may play an important role in posterior palate fusion.

作者还观察到中脊上皮细胞前后向的迁移，这种机制可能在后部腭板的融合中起到重要作用。

This algorithm replace the traditional forword, and backword_ character-to-character conditional probabilities with forword_ and backword. character-to-syllable conditional probabilities so that the space of data-base may be greatly reduced and the efficiency of searching the best solutions is also improved.

摘要］ 本文论述了一种新的汉语音字转换的概率后处理算法，该算法用字相对于前后向拼音的条件概率代替常见的字相对于前后向汉字的条件概率，极大地压缩了数据空间，提高了查找效率，使概率后处理的实时应用更趋于现实。

Objective and subjective tests show that the quality of speech synthesized by the improved method is superior to the one synthesized by the IMBE algorithm with adaptive forward-backward quantization, and as good as the one synthesized by the 2.4kbps IMBE algorithm.

主客观测试表明，改进算法的合成语音质量好于自适应前后向量化IMBE算法，且合成语音质量与 2.4kb/s IMBE算法相当。

Our results showed that the most appropriate rib's level for applying force was below the apex of scoliotic spine. From this appropriate level, the stress delivered to its conjunctive vertebra was the highest, as 1.3~1.8 times compared with others. Furthermore, the correction of Cobb's angle was also the highest, achieved 15%. The ML force was dominant in alteration of Cobb's angle, whereas the AP force was dominant in alteration of axial vertebral rotation. In addition, initial vertebral rotation influenced neither correction nor stress.

研究结果显示由凸点椎体的下一节对应之肋骨施力能使传入椎体具最高平均应力，较其他施力位置高出1.3到1.8倍之间，对柯卜氏角度可达15%的最佳矫正率；其中侧向施力主导冠状面上的矫正，而前后向施力主导扭转角度的矫正；另外椎体初始旋转角度对侧弯矫正和应力分布均无明显影响。

With the support of a major research grant of Zhejiang Province (No. 001101027) and the Plan of Promoting Education of Excellence of Zhejiang University in the 21st Century, this dissertation is devoted to address the above problems and fabricate an L-band EDFA with low cost, high performance and technological innovation.First the mechanism of an erbium doped fiber amplifier is introduced. Various theoretical models based on classical rate propagation equations are summarized and compared for their applications. We use a modified numerical model based on the Giles model, which agrees with the experimental results well. This serves as the theoretical base for the whole thesis and will be used to optimize the characteristics of EDFAs. A novel method based on a map of noise figure and gain is proposed to analyze efficiently the dependence of the noise figure and gain for EDFAs on the EDF length and the pump power. The characteristics of various EDFAs are studied and compared.Secondly, some important parameters are introduced to describe the characteristics of EDFAs. The methods and the experimental setups for measuring the gain and noise figure of an EDFA are emphasized. We introduce how to measure the characteristics of each component of an EDFA, especially the gain and absorption coefficient of an erbium doped fiber.Thirdly, four types of simple and novel L-band EDFA structures with low noise, high gain and low gain ripple are proposed to satisfy the requirement of a DWDM system. They can be classified into two categories. In the first category, a single ASE pumping is served asa secondary pump. This category includes the following three types. Type: a new construction using a fiber Bragg grating in an unpumped EDF section at the input side. Type: a new structure of L-Band EDFA with two-stage pumps, which utilizes the forward ASE as a second pump.

本论文本着科技创新、服务于生产实践的精神，以设计价格低廉，性能优越、结构合理简单的L-band EDFA为目标，依托浙江省科技厅重大科学基金资助项目(001101027)和浙江大学振兴教育计划资助的全光网络的搭建—《光通信技术》课程实验建设项目，展开了如下工作：首先，介绍了掺铒光纤放大器的工作原理，归纳总结了基于速率方程基础的EDFA的各种理论模型，分析比较了各个模型的特点和适用场合，最终选择完善的Giles理论模型作为本论文分析设计EDFA的理论基础；针对实际实验条件提出了修正的EDFA模型的数值计算方法；创新地提出了增益—噪声系数全局分析法，直观有效地分析了EDFA的增益和噪声系数与掺铒光纤长度和泵浦功率的依赖关系，并对各种EDFA的性能作了全面的比较；第二，介绍了掺铒光纤放大器特性参数的定义与测量方法，重点介绍了噪声系数和增益系数的测量方法及实验装置；介绍了组成掺铒光纤放大器各组件的特性测量方法，重点介绍了测量掺铒光纤参数的方法和实验装置；第三，针对WDM系统对L-band EDFA谱平坦、低噪声、高增益的要求，我们创新地提出了四种不同的L-band EDFA结构，按设计思路可以分为两大类：一类是基于单抽运二级泵浦法，这一类包括在未泵浦掺铒光纤的输入端插入一根布拉格光纤光栅的两段L-band的EDFA的新结构；基于前向ASE光作为二级泵浦源推动下一级EDF工作的泵浦分配、两段级联L-band的EDFA的新结构；基于单根光纤光栅、泵浦分配、两段级联的EDFA；另一类则是基于同时应用前后向C-band ASE作二级泵浦源的双抽运法，如基于前后向ASE光作为二级泵浦源的三段级联L-band的EDFA的新结构。

与前后向的相关的网络解释 [注：此内容来源于网络，仅供参考]

buccal cavity：口腔

口位于头的前端,口后为口腔(buccal cavity),口腔后端有一袋形齿舌囊(radulasac). 齿舌囊的底部是一条可前后活动的膜带,膜带上分布有成行成排、整齐排列的几丁质细齿,齿尖向后,膜带及齿构成齿舌(radula),齿舌囊的底部有齿舌软骨(odontophora),

Christ Child：圣婴

西班牙语"El Nino"意为"小孩",写成"EL NINO"则是"圣婴"(Christ child)的意思. 这个词最初出现在19世纪,当时的秘鲁航海家发明,每隔数年,在圣诞节前后,海岸邻近的海水温度升高,海流变向朝南. 同时,气候变坏,象天性反复无常的小孩在大发性格.

hardcover：精装书

有些精装书(hardcover)与平装书(paperback)不同,在厚厚的硬壳外面还套着一张外封面,一般通称护封,护封前后都有一个向里折的折口,又叫勒口. 虽然图画书的护封与封面一般是同一个画面,但前后的勒口上往往印着许多与这本书相关的重要信息,

Ray Parlour：帕洛尔

罗本面对劲敌无所畏惧,一个变向将雷茨格(Reiziger)过掉,正要突破禁区时,帕洛尔(Ray Parlour)又补防上来,两人前后同时夹攻!从后插上的杰拉德迎球一记大力抽射,皮球"嗡"的一声飞向米德尔斯堡大门,这记射门打得非常突然,

Ribs：肋骨

1.肋骨 肋骨(ribs)起于胸椎两侧,后段呈水平向外走行,前段自外上向内下倾斜走行形成肋弓. 肋骨前后端不在同一水平,一般第6肋骨前端相当于第10肋骨后端的高度. 前段扁薄,不如后端影像清晰. 1~10肋骨前端有肋软骨与胸骨相连,

skirt：裙板

为了更好地与车架匹配,引擎罩后侧需要进行打磨修正;3.富士美将所有的外部车体构件拆分开来,包括引擎罩、前后保险杠、前后裙板(skirt)和门槛. 于此同时,富士美打通了向机油冷却器输送空气的低位进气口(右舵版R35独有,

slider：滑块

它们都包含一个"滑槽(trough)"和一个"滑块(slider)"(在一些其它GUI环境下又称"thumbwheel"). 用鼠标指针拖动滑块可以在滑槽中前后移动,在滑块前后的滑槽中点击,根据不同的鼠标按键,滑块就会向接近点击处的方向移动一点,或完全到位,

Eoanthropus：曙人

在这个时间的前后,也有猿人生活在爪哇、曙人(Eoanthropus)生活在皮尔唐(Pildown)、海德堡人(Heidelberg man)生活在茅厄尔(Mauer). 实际上所有这些类型都是同时的. 它们由中亚高原各自向东、向西南和向西移动了一样远. 这足以表明,

sagittal：前后向的

sagitta数学的矢 | sagittal前后向的 | sagittalarc颅矢状弧

heidelberg man：海德堡人

在这个时间的前后,也有猿人生活在爪哇、曙人(Eoanthropus)生活在皮尔唐(Pildown)、海德堡人(Heidelberg man)生活在茅厄尔(Mauer). 实际上所有这些类型都是同时的. 它们由中亚高原各自向东、向西南和向西移动了一样远. 这足以表明,