This method employs the ring light spot image formed by a ring laser projected onto the inner surface.

该方法利用环形激光束照射到深孔内膛表面上形成的环形光斑图像进行检测。

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This method employs the ring light spot image formed by a ring laser projected onto the inner surface.

该方法利用环形激光束照射到深孔内膛表面上形成的环形光斑图像进行检测。

youdao