Because the laser process has no machine momentum and pressure, and has a small facula and a narrow slot material.
由于激光对划槽材料几乎不产生机械冲力和压力，加上激光光斑小、划缝窄。
As a kind of laser-positioning system, the system collects the facula image by CMOS image Sensor. And the precise position of the facula can be worked out with center of gravity method.
作为一种激光定位系统，该系统采用光斑定位技术，以CMOS图像传感器作为光斑定位器件并用重心法求光斑位置。
The facula was reduced three times and focalized on samples, the optical system was restored and focalized to a receiver, and the energy usage ratio can be calculated and analyzed.
将光斑缩小三倍聚焦到样品上，把光路还原聚焦到接收器上，对能量利用率进行了分析计算。
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