semi-round head rivet

例句：

1. 1.The construction of the bridge required the installation of a semi-round head rivet.
   建造这座桥需要安装一个半圆头铆钉。
2. 2. The engineer used a semi-round head rivet to secure the wooden beams together.
   工程师使用一个半圆头铆钉将木梁固定在一起。
3. 3.The carpenter was tasked with installing the semi-round head rivet on the door hinge.
   木匠被指派在门铰链上安装半圆头铆钉。