butt-end

基本解释

All valves are to be supplied with butt-weld end connections as specified.
所有截止阀按要求为对焊端连接。
The injuries were such as might very well have been inflicted by the butt-end of his son's gun, which was found lying on the grass within a few paces of the body.
从伤痕看，武器很可能是他儿子那杆枪的枪托，那枝枪躺在草地上，离尸体不过几步远。
Controlled burning significantly improved the growth of the diameter at butt-end and its current annual increment, and the growth of the height and its current annual increment.
对五年生杉木幼林的树高生长及其连年生长也具极显著的促进效应。