查询词典 and then

In the ***, all types and fundamental principles of Radon transform are summarized systematacially. This *** starts from the general linear Radon transform, and then researches how to use the damped least square method to find the solution of the forward transform. However, the least squares smoothing effect will lead to a certain degree of trails in the data of Radon domain, which led to the application\'s limitations. After that the implementation in Radon domain and relative merits of linear Radon transform, parabolic Radon transform and polynomial Radon transform which have time invariance are introduced, the conjugate gradient method that can solve numerical solution is also given. And then the high resolution Randon transform is discussed, it introduces the regularization theory and Bayes principle into inversion, which successfully remove the negative affect caused by discrete Radon transform. Finally, we introduce the optimal weighting similar coefficient Radon transform, which adapt to the time variant quality of hyperbolic Radon transform.

本文系统总结了Radon变换的各种类型及其基本原理，从τ- p变换(即一般线性Radon变换)出发，研究利用阻尼最小二乘平方法求解其正变换，但是最小平方法的平滑作用会导致Radon域数据存在一定程度的拖尾效应，给这种方法的应用带来了很大的局限性；然后先容了具有时不变性的线性、抛物和多项式Radon变换在频率域的实现及其优缺点，给出了求解其数值解的共轭梯度算法；接着讨论了高分辨率Radon变换，它把正则化思想和贝叶斯原理引进到了反演中，很好的克服了离散Radon变换产生的截断效应对结果的不利影响；最后先容了适应双曲Radon变换时变性质的高分辨率最优相似系数加权Radon变换。

Once or twice of a night we would see a steamboat slipping along in the dark, and now and then she would belch a whole world of sparks up out of her chimbleys, and they would rain down in the river and look awful pretty; then she would turn a corner and her lights would wink out and her powwow shut off and leave the river still again; and by and by her waves would get to us, a long time after she was gone, and joggle the raft a bit, and after that you wouldn't hear nothing for you couldn't tell how long, except maybe frogs or something.

每天晚上，我们总有一两回看到一只轮船轻手轻脚在暗地里溜过去，从烟囱里喷出一大簇火花来，象雨点般地落在水面上，煞是好看。然后它拐过一个弯，灯不亮了，吵闹声停下来了，留下的是一片寂静的大河。轮船卷起的水浪，在它开走以后好久才流到我们的面前，把木筏轻轻摇动几下。在这以后，你耳朵里一片寂然，有好长好长一段时间里一片寂然，只是偶然传来青蛙的叫声。

The control principle of electrostatic shaping was introduced according to the balance between electrostatic force and resulting force formed by membrane deformation and the complex shaping process of SMEC. Then, taking the trisection circularity electrode for an example, the distribution characteristic of electric potential in the electrostatic field was analyzed, namely, the expression of potential function in the electrostatic field was deduced by Laplacian equation. And then, by combining the difference equation with electric potential expression, the numerical solutions of electrostatic force in single electrode mode and trisection circularity electrode mode were disposed. Finally, the calculated figure was compared with the ideal paraboloid and comparison shows that more accuracy would be achieved by multi-electrode control.

根据静电力与薄膜变形载荷作用力之间的平衡关系和静电拉伸薄膜反射镜成形的复杂过程，介绍了薄膜反射镜静电成形的控制原理；以三等分环状电极为例，分析了静电场中空间电势分布特性，即从拉普拉斯方程推导出静态场势函数的表达式；然后，利用差分与电势方程结合的方法，对单电极电场力和三等分环状电极电场力进行了数值求解；最后，将计算面形与理想抛物面进行了比较，结果显示，单电极情况下得到的薄膜反射镜面形不是理想抛物面，若采用多电极控制可获得更高的控制精度。

First of all, this study will be multi-walled carbon nanotubes by chemical oxidation process purified so it can be modified to deal with than the purification of purity before the modified 5 wt%, more than 1.89 times the surface area to increase the surface potential decrease of about 10 ~ 20 mV and the surface functional base (-COOH and-OH) to increase 1.45 times, and then the control technology of electroless preparation parameters include: analysis of plating time, plating analysis of temperature, metal ions in solution than the (Fe2+/ Ni2+), bath pH and the added value of dispersion Agent and other research towards Fe-Ni particles to increase the iron content and Fe-Ni particles spread in the MWCNT upper fixed targets,the results found that when the parameters for the preparation of 50 ℃, pH10, do not add dispersant, metal ions than the solution (Fe2 +/ Ni2 +) 7, the highest iron content can be Fe = 40.55 at%(flat iron content 111.17 mg / g) of nanocomposites Fe-Ni/CNT, then for a series of the nature of its analysis, the final evaluation Fe-Ni/CNT nanocomposites were processed on the effectiveness of the application of mixed pollutants, the results showed that in 120 minutes at the same time when Adsorption of heavy metal ions lead nitrate 10 ppm, selenium heavy metal ion degradation of 1 ppm and orange azo dye AO7 50 ppm standard of effluents, and after a total Fe-Ni nano-particles to SEM / EDS analysis of more than 50% still remaining.

本研究首先将多壁奈米碳管以化学氧化法做纯化改质处理能使其纯度较纯化改质前提高5 wt％、比表面积提高1.89倍、表面电位下降约10~20 mV以及表面官能基提高1.45倍，再控制无电镀技术之制备参数包括：析镀时间、析镀温度，镀液中金属离子比(Fe2+/Ni2+)、镀液pH值及是否添加分散剂等，研究朝提高Fe-Ni粒子的含铁量与Fe-Ni粒子散布固定在MWCNT上等目标进行，研究结果发现当制备参数为50 ℃、pH10、不添加分散剂、镀液金属离子比(Fe2+/Ni2+)7时，可得到最高铁含量Fe = 40.55 at％(单位铁含量111.17 mg/g)之奈米复合材料Fe-Ni/CNT，接著对其作一系列性质分析，最后评估奈米复合材料Fe-Ni/CNT对共处理混合污染物之应用效益，结果显示其在120分钟时能够同时吸附重金属硝酸铅离子10 ppm、重金属硒酸根离子1 ppm及降解偶氮橘色染料AO7 50 ppm达放流水标准，且共处理后奈米Fe-Ni粒子以SEM/EDS分析仍剩余50 %以上。

Then it was past and the land flattened out, emptying of houses and roads, of human endeavour and misdemeanour, to be replaced by scrubland, occasional swamp, and then warthog, zebra and impala running from the train.

之后，是一片平地，房子和公路，人类的劳作和滋事，在之后是灌木丛，偶尔是沼泽地，再看到的是疣猪，斑马和黑斑羚从火车面前奔跑。

How then will it be when I think of the powerful good things which you have showered on me while I am not able to thank you enough for any one of them, so may the words of your feather be praised according to your knowledge and the judgments you have made and so much of your grace has encompassed your creatures and so much as your power has encompassed and a multiple that you are due from your creatures, oh Lord, I testify to my good deeds towards you, so add to your goodness to me for the rest of my life, greater, more complete, and even better than in the past with your mercy and you are the most merciful Lord, I implore you and beseech you by calling you the ONLY ONE, by glorifying you, praising you and acclaiming you, calling you the greatest, praising your completeness, by your leadership, by calling you the mightiest, by sanctifying you, by your glory, your mercy, your grace, your wisdom, your gentleness, your high position, you're your respect, your goodness, your exaltedness, your generosity, your perfection, your pride, by your rule, your might, your good acts, your thankfulness, your beauty, your grandeur, your proof, by your forgiveness, by your prophet and those close to you, his family and companions that you bless our Lord Mohammed and all other prophets and messengers and that you do not refuse me you care, nor your good deeds,… nor your beauty, nor your grandeur, nor the benefits of your honor, for you have given me so many gifts that you can never be hindered by miserliness, neither will neglect to thank you for your goodness reduce your generosity nor will your countless, exalted…… beautiful, noble gifts limit your overwhelming generosity, nor will you fear poverty and the river of your good deeds does not reduce your generosity, nor will you fear poverty and then become stingy.

当我想起你曾慷慨赐给我的好处，而对于每一个好处，我都无力以尽谢，愿你按你的智慧和你所成就的审判得着赞美。你以丰盛的恩惠环绕你所造的，正如你的力量环绕他们一样，你当从你所造的得到众多的赞美。主啊，我向你证实我对你的善功，所以在我的余生求你比以前更大，更全更好地以怜悯仁慈待我，你是至慈的主。我恳求你，哀求你，称你为至大，赞你的完全，你的带领，称你为至强的主，尊崇你，赞美你的荣耀，怜悯，恩惠，你的智慧，亲切，高位，你的仁慈，尊贵，慷慨，你的完美，统治，力量，善举，你的美丽，高贵，你的证明，你的宽恕。愿你赐福我们的至圣穆罕默德和他的家人，伙伴和所有其他的先知和使者以及接近你的人。你没有拒绝看顾我，也没有停止你为我做的美事，对我的礼待恩惠，因你给我如此之多的礼物，毫不吝啬，我也不会忘记感谢你的仁慈。你巨大的慷慨不会只限于无数尊贵，美丽，极好的礼物，纵然你的美事成川，你的慷慨也不见少，你也不会害怕贫穷，以至吝啬。

The representative minority cultural relic-pottery relic of Buyi minority and the two wooden masks is taken as the research object. Firstly, Hiscanner laser scan detector was adapted for data collection, and then obtain point cloud data which could be recorded on disc for permanent saving was obtianed; Furthermore, the new popular reverse engineering software Geomagic for some disposals of point cloud data was adopted in data condensing, data mending, data filtering, feature line picking up to obtain NURBS surfaces; and then the error between the reconstructed CAD model and the point cloud data was evaluated to guarantee the precision of surface reconstruction to keep the relics keep its original appearance. In the end, the NURBS surfaces are imported to 3D software Solidworks and entities of CAD are generated by surface sewing, mold loft and ablating and other instructions.

选用有代表性的贵州少数民族文物―布依族酒壶、水壶以及木制傩戏面具作为研究对象，采用Hiscanner激光扫描测头对其进行数据采集，扫描得到的点云数据可刻录到光盘上作为文物数据永久保存；更进一步地，采用目前流行的逆向工程软件Geomagic studio对点云数据进行数据精简、数据滤波、数据修补、提取特征线等处理后得到NURBS曲面；为保证曲面模型重建的精度，在曲面重建模型后对其误差评价，通过控制误差的方式指导曲面模型重建，使重建的文物曲面模型能真实完整地反映原状；最后，在功能强大的三维造型软件Solidworks中导人重构的NURBS曲面进行曲面缝合、放样等，将其生成实体CAD模型，并对模型的局部特征进行适当的再设计以实现文物实体模型的优化。

Methods32 Wistar female rats, randomly divided into 4 groups were shamly operated or ovariectomized ,then all were fed with medicine for two months and then killed.The right tibiae were roasted and weighed to be dissolved by muriatic acid for testing Calcium,Magnesium,Phosphorus, and hydroxyproline. The left proximal and middle tibias were trimed and processed undercalcified sections for cancellous and cortical bone histomorphometric analysis.

方法取32只Wistar雌性大鼠随机分为4组，按要求行去势手术，然后分别灌胃给药，8周后处死，取大鼠右胫骨烘干测定钙、镁、磷及羟脯氨酸；取左胫骨上段松质骨和中段皮质骨硬组织包埋、切片，图像分析松质骨、皮质骨形态计量参数。

According to the most unfavorable fire scenario for safety evaeuation, the AEST can be obtained through the spread of fire and smoke spread simulation. And the REST of different staff loads are calculated by empirical formula method. Through contrasting two times, whether evacuation passage setting can meet the evacuation requirements is confirmed, and then solutions are proposed. Then highway tunnel fire cause is discussed by Fault Tree Analysis method, and the effective measures to reduce the probability of tunnel fire are reducing the number of flammable materials and using fire-retardant or noncombustible materials for inner decoration are obtained.

以厦门金山寨隧道为例分析火灾时人员的安全疏散，针对隧道内最不利人员安全疏散的火灾场景进行分析，通过对火灾蔓延、烟气扩散进行模拟获得可用的人员安全疏散时间AEST，并用经验公式法计算不同的人员荷载下必需的人员安全疏散时间REST，对比两个时间，判别当前疏散通道的设置是否满足人员疏散要求，并对不满足安全疏散要求的工况提出解决方案。

In the network JY played a year, I to have always been and then have no to feel the interpersonal exchanges, because I am not a Chinese, I is 1 the year ago go to when traveling China buy to the game card of 1 network JY, return to Seoul's home the empress, and I packed to ascend the gamed, but computer and the manifestation of the nonsupport Chinese language, therefore I please friend who study abroad in China purchased a Taichung country computer, computer 托 that produce the 运 go to Seoul is already octobered, and pack the game to behind see to see to new- break throughed Fuzhou to stand, I and incognizant Chinese characters, literally choose and then enter, pass by donkey years of grope for, and I understand the game, and feel the Chinese to think the elephant dint very abundant, the Mr. JY novel also write of very stick, I do not understand the Chinese language, therefore I play the network JY resemble at play the single game, many people to request to chat with me, I see to not understand, therefore can't with everybody exchanges.

在网络JY中玩了1年，我从来就没有感觉到过人与人之间的交流，因为我并不是中国人，我是1年前去中国旅游时买到了1张网络JY的游戏卡片，回到汉城的家里后，我装上了游戏，但是电脑并不支持汉语的显示，所以我拜托在中国留学的朋友购买了一台中国生产的电脑，电脑托运到汉城时已经是10月了，装了游戏后看到看到新开通的福州站，但是我并不认识汉字，随便选了就进入，经过很久的摸索，我了解了游戏，觉得中国人的想象力很丰富，JY先生的小说也写的很棒，但是因为我不懂汉语，所以我玩网络JY就像在玩单人游戏，很多人要求和我聊天，但是我看不懂，所以就无法和大家交流。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。