片语
american taper pipe thread美国标準锥管螺纹
taper pipe thread die锥管螺纹板牙
pipe tap锥管螺纹;管壁孔;分接管;管用丝锥
taper screw thread圆锥螺纹
dryseal taper pipe thread气密斜管螺纹
taper internal thread斜内螺纹
Taper Screw Thread Standard美制螺纹手册
taper pipe thread锥管螺纹;斜管螺纹
taper external thread斜外螺纹