three beams interference 三光束干涉
three beams interferometer 三光束干涉仪
assembled structure of three beams 组合三段横梁
three wave beams 三波束
The plane in which three beams are is vertical to horizon- tal scanning direction.
它的荧光粉条与行扫描方向平行，三束平面与行扫描方向垂直。
A pill millimeter microwave sensor technique for detecting and identifying airdrome runways by three beams was discussed.
本文介绍了一种用于探测识别机场跑道的三波束毫米波弹载敏感器技术。
The optical parameters of grating and intensity ratio among three beams in interferometer are derived from the view of optimization design.
从优化设计的角度求出了光栅的最佳参数以及干涉仪三束光的最佳光强之比；
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