flat slotted head bolt

例句：

1. 1.The construction crew used flat slotted head bolts to secure the wooden beams.
   建筑工人使用平头槽头螺栓来固定木梁。
2. 2. The engineer designed a new machine that uses flat slotted head bolts for fastening.
   工程师设计了一台新机器，使用平头槽头螺栓进行快速紧固。
3. 3. The carpenter replaced the old flat slotted head bolts with new ones to make the door stronger.
   木匠用新的平头槽头螺栓替换旧的，使门更结实。