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This text has done a summary to PSD first , then introduce the structure , operation principle and characteristic of PSD, PSD position sensor experimental provision and measuring the circuit, study size , to enlarge size , mid point position of coefficient choose measurement range , sensitivity , non-linear influence of error in PSD circuit of luminous point emphatically.

本文先对PSD做了一个概述，然后介绍了PSD的结构、工作原理及特性，PSD位置传感器实验装置及检测电路，着重研究了光点的大小、电路的放大系数的大小、中点位置的选取对PSD的测量范围、灵敏度、非线性误差的影响。

In order to reduce chip size and cost, we must continue scaling down the size of MIM capacitors.

所以为了减少晶片面积和成本，我们必须缩小金氧金电容的尺寸。

However, the trade-off between extra computational effort with respect to increased population size is a problem specific decision to be ascertained by the modeller, as doubling the population size will approximately double the solution time for the same number of generations.

但是，权衡额外的计算方面的努力，增加人口规模是一个问题的具体决定，确定了建模，作为增加一倍的人口规模将约增加一倍，解决的时间相同数量的后代。

The size overhead is moderate for user classes (usually the size of three pointers).

对於用户类的空间开销适中。

Small size, convenient installation of transport: the use of modular design comprising a variety of the central air-conditioning system capacity, small size, easy to transport, install and flexible.

体积小，方便安装运输：采用模块化设计组成各种容量的中央空调系统，体积小，便于运输，安装灵活。

The microcrystalline strengthening effect is obvious, due to the sample with fine grain size that was wintered at low temperature and owned good bending strength. At the same time, also due to fine grain sizes, only less tetragonal zirconia grain that their sizes exceeded critical phase transformation size and could change into monoclinal phase when suffering stress, indistinct effect of transformation toughening operated, hence lower fracture toughness was obtained.

由于其晶粒尺寸较小，细晶强化的效果非常明显，因此，材料具有较高的抗弯强度；同时，由于晶粒小，只有一部分晶粒可以达到临界相变尺寸，相变增韧的效果不明显，因此试样的断裂韧性较低。

Diaphragm movement in the direction we are through,"Fleming left hand rule"(also known as "motor rule") determined by when the audio signal source is positive when the right side, the diaphragm in the opposite direction and plans, so that when the audio The size of the signal, changing direction, the diaphragm of the vibration on the subsequent non-stop, and its current size of the rate associated with the audio.

振膜运动的方向我们是通过"弗莱明左手定则"确定出来的，当音频信号源右端为正时，振膜的方向与图中相反，这样当音频信号的大小、方向不断变化时，振膜就随之不停的振动，其幅度与音频电流大小相关。

The aim of this study was to investigate the relationship between reclamation size and mud flat development size during different period of time. It was achieved by a combination of field surveys and the use of Landsat TM and ETM remote sensing satellite data of the past 20 years as the key data source.

此项研究以近20年来的Landsat TM和ETM遥感卫星数据为主要数据源，并结合实地景观调查，对不同时期的人类围垦面积和滩涂发育面积之间的关系进行探讨。

The result showed that the size of mud flat wetland decreased rapidly: from 19705.09 hm2 in 1987 to 4773.08hm2 in 2002, a 75.78% drop in 15 years. In addition, the annual reduction rate of the mud flat wetland size was 995.47 hm2/a, which was 36.54% more than the annual reclamation rate, 729.08hm2/a.

结果显示，滩涂湿地的面积在逐年变小：从1987年的19705.09 hm2 锐减到2002年的4773.08hm2，减少了75.78%；并且滩涂湿地面积的年减少率为995.47 hm2/a，比年围垦率的729.08hm2/a增加了36.54%。

There exist strong negative correlation between crystal size and crystallinity of illite in altered mylonite of low strain and low water/rocks ratios, and positive correlation between crystal size and crystallinity of chlorite in altered untramylonite of high strain and high water/rocks ratios.

在岩石应变较弱、水／岩比较小的糜棱岩带，伊利石的平均结晶大小与结晶度成负相关，而在岩石应变较强、水／岩比较大的超糜棱岩带，绿泥石的平均结晶大小与结晶度成正相关。

The two-acre Dunbar Community Garden in Little Rock has served as a model for several years.

几年来，坐落于小石城，占地两英亩的邓巴社区菜园树立了一个标杆。

Jerry points to the jacket hanging in the bathroom. It's ruined, and unwearable What?

杰瑞指着洗手间里挂着的夹克，毁了，不能穿了）什么？