激光器上红外线的作用
1.检测雕刻材料表面是否平整
2.类似于坐标轴，有助于辅助定位，对于专业人士帮助更大
3.不用时可以关闭
2.类似于坐标轴，有助于辅助定位，对于专业人士帮助更大
3.不用时可以关闭
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