粗抽管路roughing line【真空】
粗选roughing【矿】;roughing separation【矿】;
【化】 初步加工roughing
粗抽泵roughing pump【真空】;roughing vacuum pump【真空】;
粗切削bastard cut【机】;roughing cut【机】;
无滚动粗切no-roll roughing【机】
三辊式粗轧机three-high roughing mill
莫氏锥形粗加工铰刀Morse taper roughing reamer