spigot shaft

例句：

1. 1. The carpenter used a spigot to tighten the bolt.
   木匠用一个螺栓头来紧固螺栓。
2. 2.The engineer carefully measured the length of the spigot shaft before cutting it.
   工程师仔细测量了螺栓头轴的长度，然后才进行切割。
3. 3. The construction crew assembled the spigot shaft for the new bridge.
   建筑工人组装了新的桥梁的螺栓头轴。