The principle of laser marking-off equipment is introduced by use of geometric optics.
利用几何光学方法阐述激光标线仪标线的基本原理。
After proving the feasibility in theory, we designed color-changing laser marking system, including optics system, controlling system etc.
本文在论述方法的可行性后，设计出了变色激光打标机，包括光路系统、控制系统等。
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