The formula of wedge angle is deduced under the condition of two-beam interference.

在考虑双光束干涉的情况下，导出测量平板楔角的公式；

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The temperature characteristics of two-beam coupling in photorefractive crystal was discussed by using the one-carrier and one-level band-conduction model.

用单载流子一能级带导模型讨论了光折变晶体双光束耦合的温度特性。

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The experiments , comparison and analysis for the three thickness measurement methods :two-beam diffraction method , contamination spot method and contamination line method were carried out.

前言： 对用电子显微镜测量薄膜厚度的三种方法：双束衍射法、污斑法、污线法进行了实验及比较分析。

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Google has developed an Android-to-Android sharing system called Android Beam that allows two NFC-equipped Android phones to share files when the two devices are tapped together.

CNN: STORY HIGHLIGHTS

In other words, what you have is trouble, all mixed together, with two-and-a-half major media markets frantically trying to beam a unifying signal across the whole bunch of them.

NPR: What It Means to Be a California Republican

If they are the same, the two photons will come out of the beam-splitter together.

ECONOMIST: Quantum information technology