查询词典 backward motion

Each class of gifted students, and poor hygiene is compared to exist, but indeed a small number of students it is difficult myrmidon, they will become the so-called backward students.

每个班的优生、差生是相比较而存在的，但确也有少数学生难以跟班，于是便成为了所谓的后进生。

The local Han people have their own unique characteristics in the skeletal configuration: the vertical pattern with a little bit protruding in the nasion and the forehead appearance as well, relatively backward maxillary convexity.

乌鲁木齐地区汉族人群牙颌、颅颌硬组织形态具有本地区特征：直面型，鼻根点较为前挺，上颌突度缩小，额部较前突。

But we ought to the nature of recognize capital, there also is negative effect while the foreign capital that sees backward country and area are introduced is promoting these countries and region economy development.

但我们应当认清资本的本性，看到落后国家和地区引进的外资在推动这些国家和地区经济发展的同时也有负面作用。

Our newspaper reporter interviewed public praise of search room net, Yahoo, home and net, how to reside guest and the net that buy a house is relevant chief, trade in estate in serving catenary, go farthermostly, it is agent room cause news and demand information are released on the website, reach trade backward the website pays middleman's fee.

本报记者采访了搜房网、雅虎口碑、家和网、安居客和购房网相关负责人，在房地产交易服务链中走得最远的，是经纪人在网站上发布房源信息和需求信息，达成交易后向网站支付佣金。

Even when they are clear of the barn the horse continues to fight and lash backward toward the doorway until Gillespie passes me, starknaked, his nightshirt wrapped about the mule's head, and beats the maddened hors or out of the door.

麦克回过头来看我们，在他脸上，眼睛和嘴巴形成了三个圆圆的窟窿，脸上的斑点像是摆在一个盘子里的英国豌豆。他的声音尖细，显得很遥远。

This thesis is divided into six parts. The first chapter is preface, the current status of research in the inverse problems for parabolic partial differential equations is reported; the second chapter is "regularization methods for numerical differentiation and their applications ", in this chapter we investigate many regularization methods from a viewpoint of regularization theory and algorithm, some applications in the inverse problems for parabolic partial differential equations are given; the third chapter is "spectral regularization methods". Based on Fourier analysis, within the framework of regularization theory, we apply the spectral methods to some ill-posed problems. Many numerical experiments are done in order to show the validity of the methods; the fourth chapter is devoted to wavelet dual least squares method and a revised wavelet method; in the fifth chapter,we combine finite difference method with method of lines and apply it to the backward heat conduction problem in time; in the sixth chapter "identification problems for unknown source ", the essence and the degree of two problems related to source identification are pointed out, at the same time, some numerical methods are reported.

本文分为六个部分，第一章前言简要分析了国内外抛物型偏微分方程反问题的研究现状；第二章数值微分的正则化及其应用从正则化理论和算法的角度出发，考察了许多正则化方法，还给出了数值微分在抛物型偏微分方程反问题的一些应用；第三章谱正则化方法是在Fourier分析的基础上，在一般正则化理论的框架下，给出了这种方法在各种不适定问题中的应用，数值实验表明谱方法是有效的；第四章研究了小波对偶最小二乘方法和改进的小波方法；第五章主要研究了有限差分方法结合线方法在时间反向热传导问题中的应用；第六章是未知源识别问题，主要指出了两类未知源问题的不适定程度和不适定本质，同时报告了一些数值方法。

After the design with studying to the automatic graduation numerical control backward table of his major hardware device is carried out, the range of processing complex ruled surface by WEDM is widened, and the problem in cutting parts with complex surfaces is solved.

开发了能实现空间曲面零件电火花线切割加工的极坐标加工系统，阐明了系统的组成和运动规律，对其主要硬件装置———翻转式自动分度数控回转台进行了设计和研究，从而进一步拓宽了电火花线切割加工的工艺范围，解决了空间曲面零件的加工难题。

Having carried on the design with studying to the automatic graduation numerical control backward table of his major hardware device, thus widen the range of processing complex ruled surface by WEDM, and solved the problem in cutting parts with complex surfaces.

开发了能实现复杂型面零件电火花线切割加工的多轴联动加工系统，阐明了系统的组成和运动规律，研制了其主要硬件装置——数控回转台，并进行了加工实验研究。

Desirable seat or lie on one's back, the head is admired backward a bit, with left

可取坐位或仰卧位，头稍向后仰，用左

The patient is adopted lie on one's back, and according to cyst position forward or differ backward degree tilts, with benefit at receiving an injection.

患者采取仰卧位，并根据囊肿位置向前或向后不同程度倾斜，以利于进针。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。