短語詞組短語internal ratio screw thread 內(nèi)螺紋internal ratio screw thread finish 內(nèi)螺紋瓶口internal screw thread finish 內(nèi)螺紋瓶口Internal Screw Thread Bottom Hole 內(nèi)螺紋底孔multiple -internal screw thread 導程多頭梯形內(nèi)螺紋internal lock plate screw thread 內(nèi)板鎖緊螺釘螺紋internal thread of ball screw 滾珠絲杠副內(nèi)螺紋 返回 internal screw thread