comparison method of measuring
... companion flange 对接凸缘 comparison method of measuring instrument 量具比较法 compartment mill 多仓磨机 ...
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表面粗糙度比较样块是用比较法检查零件表面粗糙度的一种量具，在机械工业生产中得到广泛的应用。
The surface roughness comparison specimens are used to calibrate the surface roughness of work pieces by comparison. They are widely used in machinery industry.
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