coneheaded bolt

例句：

1. 1. The engineer used a cone-headed bolt to secure the roof.
   工程师用一个圆锥头螺栓来固定屋顶。
2. 2.The construction crew had to remove the cone-headed bolts before they could start work.
   施工队在开始工作之前必须拆除这些圆锥头螺栓。
3. 3.The carpenter replaced the cone-headed bolts with new ones for better strength.
   木匠用新的圆锥头螺栓替换了旧的，以增强强度。