题目内容

激光加工是通过一系列装置,把激光聚集成一个极小的光斑(直径只有几微米到几十微米),由于区域小,从而可获得108~1010W/mm2的能量密度,其温度可达()。

A. 5000℃
B. 50000℃
C. 10000℃
D. 100000℃

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