查询词典 backward difference

At present, China Excellent javelin thrower lower limb segment placed before the positive tread in the poor backward angle variations of the trunk is small, the level of Pull angle fluctuations, lead to physical decline in the focus of the horizontal velocity, cross-step and go beyond the combination of devices is not ideal, beyond the equipment is not sufficient.

目前我国优秀标枪运动员下肢环节的积极蹬地前摆欠佳，躯干后倾角度变化幅度小，水平拉引角波动较大，导致身体重心水平速度下降，交叉步与超越器械的结合还不理想，超越器械不充分。

In this paper, firstly we researched the relationships of the communicating distanceand the channel characteristic, the effect of the multiple scattering to the laserpropagation, the requirement of the laser communication to the ATP system and theway to determine the angular dispersion and receive field of view. It is proved that inlight haze weather, letting the input and output laser\'s wavelength are diferrent witheach other, after passing by the filter, it can avoid backward scattering effectually andfor the communication within 15km, the influence of the multiple scattering inatmosphere can be ignored.

论文对通信距离与信道特性、多次散射对光传输的影响、无线激光通信对ATP带宽的需求以及光束发散角和接收视场角等重要系统性能参数和指标进行了分析和研究，证明了在轻霾天气状态下，使系统中两终端发送的激光束波长各不相同，经过光束滤波，可以有效地消除后向散射干扰；在15km的通信距离范围内，大气中的多次散射对无线激光通信光传输的影响可以忽略。

Theoretical calculations show that the angular distribution of the forward and backward products is roughly symmetric for the title reaction.

理论计算的结果发现，这个反应体系的前向和后向的角分布基本是对称的。

Existence of anomalistic hexagon structure of honeycomb paperboard core produced by backward equipment has influence on its compression characteristics.

但是由于设备等因素使原纸上粘结胶水长度不一致，导致了纸芯结构的不规则，这将影响到蜂窝纸的抗振性能。

I can go no further in this backward investigation of my lady's antecedents.

我对爵士夫人过去经历的追究调查，没法儿再进行下去了。

RESULTS:In vertebral pulp extirpation group, the stress was proved to be the highest at superior edge, posterior middle part, lower edge and anterior middle part of small joints under anteflexion, backward extension, compression, lateroflexion and revolving states, moreover, small joint stress in artificial lumbar intervertebral disk was higher than that in normal intervertebral disk, but obviously lower than that in vertebral pulp extirpation group;however, the small joint of the middle part of artificial lumbar intervertebral disk bore the highest stress under revolving states.

结果：髓核摘除组小关节的上边缘部、后中部、下边缘部和前中部在前屈、后伸、压缩、侧屈、旋转状态应力最大，人工腰椎间盘组的小关节的应力比正常椎间盘高，但明显小于髓核摘除组，但正中部在旋转状态下，人工腰椎间盘小关节的中心部位承受的应力最大。

In such a medium, the direction of the Poynting vector monochromatic plane wave is antiparallel to that of its phase velocity. Because of that, DNG displays some unusual electromagnetic properties such as backward-wave effect, negative refractive effect, perfect lens and a limit situation, zero index of refraction materials.

在这种材料中，单色均匀平面波的相速方向和坡印亭矢量方向是相反的，因此使双负材料表现出一系列反常的电磁特性如：回波效应、负折射效应、完美透镜效应和一种极限情况即零折射率材料等。

It is only now and then in some very remote and backward agricultural district that an antiquarian may still discover a square house.

现如今，在一些及偏远、落后的农业地区，古文物研究者可能还能发现一间正方形房子。

They had no appetency of confiding and facing passers-by. They only existed backward-looking in the dense shade.

它没有与人倾诉的欲望，在浓重的阴影里，它只顾埋首往事，而无心面对这些匆匆的过客。

They glanced backward over their shoulders from time to time, apprehensively, as if they feared they might be followed.

他们时不时地边跑边回头看，十分担心被人跟踪。

Now he worked in ajoint venture.

现在他在一家合资企业工作。

More troops in Afghanistan won't change any of the foregoing.

更多的在阿富汗的军队也不会改变之前的状况。