flat rivet head

例句：

1. 1.The carpenter used a flat rivet to attach the wooden planks together.
   木匠用一个平头铆钉将木板连接在一起。
2. 2. The construction project required the installation of several flat rivets for reinforcement.
   这个建筑项目需要安装几个平头铆钉来加固。
3. 3. The engineer carefully measured the dimensions of the flat rivet before assembling it into the structure.
   工程师在组装结构前仔细测量了平头铆钉的尺寸。