短語詞組短語retainer oil seal groove 擋油環(huán)油槽oil ring groove 油環(huán)槽oil l groove chisel 油槽鑿oil feed groove 進油槽piston oil ring groove 活塞油環(huán)槽oil distribution groove 配油槽oil seal groove 油封槽oil collecting groove 集油溝Oil -groove milling cutter 油槽銑刀 返回 oil groove