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A store Peking Man site locates the southwest building in Peking City mountain area a store main beam of boat mountain north, ising a material to enrich most in the world, most the human site of the earlier period in system, year in age.1921 In stone in old in and in worthy in most in the to 1927, the archeologist discovers outside" Peking Man" cave site three times successively three human tooths fossil,1929, discovers again Peking Man skull fossil, and artificial creation of tool with use the fire historic relic, the important cist that to become to frighten the world detection.A year a store site still discovers to be apart from to invite now summit of hill hole person's fossil a thousand yearseses ago with culture keepsake.

周口店北京人遗址位于北京市西南房山区周口店镇龙骨山北部，是世界上材料最丰富、最系统、最有价值的旧石器时代早期的人类遗址。1921年至1927年，考古学家先后三次在"北京人"洞穴遗址外发现三枚人类牙齿化石，1929年，又发现了北京人头盖骨化石，以及人工制作的工具和用火遗迹，遂成为震惊世界的重大考古发现。1930年在周口店遗址还发现距今约2万年前的山顶洞人化石和文化遗物。

This thesis discusstion these contents, optics of lens characteristic, Fourier transform lens's performance index,design characteristic, structure type, etc. especially, do a lot work in quadruplet full symmetrical double far distance fourer transform lens aspect.

论文对光学透镜的傅里叶变换特性，傅里叶变换透镜的性能指标、设计特点、结构类型等作了研究，尤其是在四组元全对称双远距傅里叶变换透镜方面做了大量的工作。

Dynamic characteristics are analyzed such as strong nonlinearity, frequentness and randomicity of running state switching, aerodynamic instability of fixed pitch wind turbine, immen...

分析大型风力发电机组的动态特性，如强非线性、运行工况的频繁随机切换、定桨距风轮空气动力学的不稳定性、有效风速的不可测性和干扰因素多等特点。

The effect of surface friction on the structure of front and frontogenesis is investigated by using the cloud model in which the large-scale deformation field is taken into consideration.

利用加入大尺度变形场作用的非静力模式，研究了地面摩擦对锋生和锋面结构的影响，在变形场锋生条件下，对不同模式格距、不同湍流参数化方案、不同变形场强度、考虑与不考虑地面摩擦等情形进行了比较，在考虑地面摩擦拖曳作用后得到了类似重力流结构的边界层锋面特征。

The bowl of fruit was placed in the center of the table.

一盘水果放在桌子的正中。Middle 意为"中央"、"中心"但不强调是等距的。

The bowl of fruit was placed in the centre of the table.

middle 意为"中央"、"中心"，但不强调是等距的。

Preventing and controlling infection, in addition, used the Chinese native purgative ( compound prescription decoction DA CHENG QI ): Chinese rhubarb 20g ( post - decocting ), mirabilite 15g , officinal magnolia, Fructus aurantii immaturus , the peach kernel , the giant knotweed , the herbaceous peony , the dandelion , fumitory each 15g , fresh licorices 6g , the water dococtum 200ml treatment , by stomach tube pours into group every day two , each time 100ml , retains for two hours , by high retention enema group every day one , each time 200ml , when enema , the buttocks raise 10cm , the liquid level are apart from anus 50—60cm , 7days are a treatment course .

胃管注入组每日两次，每次100ml，保留两小时，期间暂停胃肠减压(中药胃管注入后胃肠减压器即予夹管，两小时后放开)；高位保留灌肠组每日一次，每次200ml，采用左侧卧位，灌肠时臀部抬高10cm，液面距肛门50～60cm，插入肛管约25～30cm，药液温度保持在40～42℃，7天为一个疗程。

His theory involves to solve the distribution of zeros of solutions of the functional differential equation with constant delay as well as more variable items.

在本文的第3章中，通过阅读大量有关微分方程振动解零点距估计的文献，我们着重分析了B.G。

In this thesis, we discuss several problems which exist to qualitative theory of the functional differential equation, within which we develop further two important theories, so-called the 3/2 - stability theory and the distribution of zeros of solutions of the functional differential equation.

本文中，我们对泛函微分方程定性研究中存在的若干理论问题进行探讨，对其中两个重要问题即3/2—稳定性理论和零点距估计问题，作了进一步推广。

Objective To investigate the association of embryo transfer distance from the fundus with the clinical pregnancy rate.

目的 研究胚胎移植内管尖距宫腔基底距离与妊娠率之间的关系。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。