短語詞組短語machining stock allowance 機械加工留量machining g allowance 機械加工余量machining stack allowance 機械加工留量excessive machining allowance 過大的加工余量rough machining allowance tolerance 粗加工余量公差machining allowance of casting 鑄件機械加工余量rough machining allowance 粗加工余量finish -machining allowance 精切余量machining -accuracy allowance 加工精度要求 返回 machining allowance