短語詞組短語threaded pipe connection 螺紋管接頭threaded hose connection 螺紋軟管接頭straight threaded mechanical connection 直螺紋機(jī)械連接screw threaded connection 螺紋聯(lián)接drill collar threaded connection 鉆鋌螺紋straight threaded connection 直螺紋連接right -and left threaded connection 左右旋螺紋接頭stripping -rib rolling straight threaded connection 鋼筋等強(qiáng)度剝肋滾軋直螺紋連接 返回 threaded connection