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Week 5 Optical path, difference of optical path, Yang interference of two slits, film interference.

第5周 光程，光程差；杨氏双缝干涉，薄膜干涉。

The interferometer requires no optical isolator until its optical path difference exceeds 500 mm.

为了提供半导体雷射一个简易的稳频方法选用Fabry-Perot光学标准具来稳频。

Finally, experimental research on VOA is carried out, including the design of measure system, the adjusting of optical path, the measurement and research of optical parameters, etc.

最后给出了VOA的实验研究情况：测试系统的设计、光路的调试、光学参数的测试和研究等。

An instrument for measuring inherent optical properties of sea water is designed based on the principle of double optical path.

设计了基于双光路原理的海水固有光学参数测量仪。

Optical depth and optical path are often confused in the literature.

文献中光学厚度和光程时常混淆。

According to themathematic model, influences of different optical path parameters on the focus-errorsignal are analyzed, then parameters of the optical system are optimized.

根据所建数学模型，分析了不同的光路参数对聚焦误差信号FES的影响，并优化设计了光学系统的参数。

study of optical path modulation in coherent optical telescope array.

光学综合孔径望远镜阵的光束组合器。

Based on the thermal optical analysis,the glass thickness of optical window under the complex environment is optimized.

以热光学分析为基础，对复杂环境下光学窗口的玻璃厚度进行了优化设计。

Cloud optical thickness and effective particle radius are the important parameters to parameterize the cloud optical properties.

中文摘要云的光学厚度与有效粒子半径是云光学属性参数化方案中的重要参数。

The optical properties of different thickness and orientation PbZrO〓 thin film have been studied. The influence of thinkness and orientation on optical properties was analyzed.

研究了不同厚度和不同结晶取向的PbZrO〓薄膜的光学性质，以及薄膜的厚度和结晶取向对光学性质的影响。

I can not negligent, he should do what?

我不能不在意了，他要做什么呢？

It is very dangerous to swim in the river alone.

一个人到河里游泳是很危险的。