短語詞組短語snap ring groove depth 止動環(huán)槽深度groove depth measurement 槽深測定variable groove depth 變槽深槽snaring groove depth 止動環(huán)槽深度chip breaker groove depth [機]斷屑槽深度groove of decreasing depth 漸淺隂線oil groove depth 油槽深度groove with variable depth [電]變深槽milled groove depth 銑槽深度 返回 groove depth