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用印模法在双管显微镜上测量较大零件和零件内孔的表面粗糙度,经我们的实践摸索,认为是一种可行的方法,具体方法是:1.首先将被测零件的表面用酒精清洗干净。2.用的材料是电影胶卷(感过光的胶卷也可以)和丙酮(分子式为CH_3 COCH_3)。
Using the impression method to measure the surface roughness of the larger part and the inner hole of the part on a two-tube microscope, it is considered as a feasible method by our practice. The specific method is as follows: 1. First, Clean. 2. The material used is a motion picture film (light sensitive film is also possible) and acetone (molecular formula CH_3 COCH_3).