角度量块是一种角度计量基准，适用于万能角度尺和角度样板的检定。

THE ANGLE GAUGE BLOCKS are angle measuring standards used to calibrate bevel protracors.

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角度量块是一种角度计量基准，适用于万能角度尺和角度样板的检定。

THE ANGLE GAUGE BLOCKS are angle measuring standards used to calibrate bevel protracors.

youdao