短語詞組短語taper external pipe thread 圓錐外琯螺紋taper internal pipe thread 圓錐內(nèi)琯螺紋taper pipe thread die 錐琯螺紋板牙dryseal taper pipe thread 氣密斜琯螺紋american taper pipe thread 美國標(biāo)準(zhǔn)錐琯螺紋National Taper Pipe Thread 國定錐形琯螺紋taps for taper pipe thread 錐琯螺紋螺孔American standard taper pipe thread 美國標(biāo)準(zhǔn)錐琯螺紋;佈氏錐琯螺紋taper -pipe-thread 錐形琯螺紋 返回 taper pipe thread