Obvious benefits were introduced to replace the means of chamfering demolition mining by shield support mining.
介绍用掩护支架采煤代替斜切爆破采煤法的显著效益。
Calculation Method About Profile Angle of Squeezing Cutter at Small Angle Edge After Chamfering Gear Teeth Edge at Transverse Face
斜齿轮齿端倒角后锐侧挤棱刀具的齿形角计算方法
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