用光...

Reciprocity Law: Expressed by = Et, where E is the light intensity, and T is time.

互易律：用=Et表示，E代表光强度，T代表时间。

To boot from the CD image ''', write it as an image to a CD or DVD recordable / rewriteable disc using your preferred CD / DVD writing software, then reboot with the disc in the drive.

从CD镜像启动'''，把它作为一个镜像用你喜欢的光盘刻录软件刻录到可以刻录的CD/DVD 光盘上，并把光盘放在光驱中，重启计算机。

An accurate measurement scheme is proposed for testing the error of cone prisms with Hartmann wavefront sensor. The measurement theory was discussed, the reconstruction of the wavefront reflected from a cone prism was studied, and the relation between the wavefront characteristics and the errors of a cone prism was given.

因此，提出一种用哈特曼波前传感器全面检测角锥棱镜角度误差和面形误差的技术方案，从理论上分析了哈特曼法的测量原理，深入研究了光经过角锥棱镜后的波面重建，给出了波面特征与角锥棱镜误差参量之间的关系。

They! But we did not like using reflective glass, the light outside was too bright to get the inside.

亮！但我们不能像那样用反光玻璃，外面太亮了里面的光就出不来了。

This paper presents the principle of optic time domain reflectometer and the fault location of optic fiber cable line by OTDR.

介绍了光时域反射仪的测试原理及其对光缆线路中经常出现的光纤故障点进行了分析，并简述了用OTDR测量时应注意的问题。

Of road with metal sensor,and measures ...

路面黑线及障碍物，使用金属传感器检测路面下金属铁片，应用光电码盘测距，用光敏电阻。。。。

AT89C51 single-chip microcomputer is used as the test and control core of the intelligent robot in this design,which detects the black line and barrier on the surface of road with infrared photoelectric sensor,and detects iron piece beneath the surface of road with metal sensor,and measures range with photoelectric yard measure,tests and judges the garage position with photoresistor,and also dynamically controls rotating direction and speed of motor by PWM(Pulse-Width Modulation) technique.

本设计以AT89C51单片机作为智能机器人的检测和控制核心，采用红外光电传感器检测路面黑线及障碍物，使用金属传感器检测路面下金属铁片，应用光电码盘测距，用光敏电阻检测、判断车库位置，利用PWM技术动态控制电动机的转动方向和转速。

Like roentgenology, psychoanalysis is a fascinating, but relatively new, means of illuminating the person. But few of us are prepared to substitute an X-ray of Grandfather's head for the portrait that hangs in the parlor.

和放射学一样，精神分析也是一种用来透视人的神奇的新手段，但毕竟很少有人愿意把挂在客厅里的祖父画像换成一张呈现他头颅结构的X光片。

When Rontgen wrote an account of what he had discovered, he called these new rays X-rays, for X is a symbol often used for something which is not yet understood.

栾琴对他所发现的东西写了一篇报告，他称这些射线为X光，因为X常常用来做为尚未了解的东西的符号。

When Rontgen wrote an account of what he had discovered, he called these new rays X-rays, for X is a symbol oftenused for something which is not yet understood.

栾琴对他所发现的东西写了一篇报告，他称这些射线为X光，因为X常常用来做为尚未了解的东西的符号。

I am sure after a few weeks of adaptation and familiarization I will have no difficulty in functioning on a daily basis in an English speaking society or in participating fully in graduate studies.

在大学的三年的学习生活不仅给予我自身的充实，更重要的是磨练和培养了我较强的自觉能力和严谨，踏实的作风以及不怕困难的精神，对未来充满了信心！

As the first volcanoes erupted, one of the gases that bellowed out was steam.

在第一批火山喷发时，喷出的气体之一就是水蒸汽。