短語詞組短語taper external pipe thread 圓錐外管螺紋taper internal pipe thread 圓錐內(nèi)管螺紋taper pipe thread die 錐管螺紋板牙dryseal taper pipe thread 氣密斜管螺紋american taper pipe thread 美國標準錐管螺紋National Taper Pipe Thread 國定錐形管螺紋taps for taper pipe thread 錐管螺紋螺孔American standard taper pipe thread 美國標準錐管螺紋;布氏錐管螺紋taper -pipe-thread 錐形管螺紋 返回 taper pipe thread