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“采石工”轮廓测量仪
利用激光系统反射来自岩石面的脉动激光束测量采石场轮廓的一种仪器。一台内置电子钟测量脉冲的“飞行时间”,从而计算岀距离。同时射出的电子垂直角和水平角也予以测量,以指明观测方向
expl.
quarryman profiling instrument
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