黑齿怎么切的才保证用心?车床?
黑齿内圆是原厂本就有的,只用去掉多余部分而已
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http://image.rcfans.com/pic/20200815/1597481212508242_810.jpg?x-oss-process=image/watermark,image_cGljLzIwMjAwNzIxL29zc18xNTk1MzM4ODExNTY2XzIzMl8xMThfMzI2LnBuZw==,t_50,g_se,x_20,y_20
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