conical rivet head

例句：

1. 1. The construction of the bridgerequired the installation of several conical rivet heads.
   建造这座桥需要安装几个圆锥形铆钉头。
2. 2. The engineercarefully selected the right conical rivet head for the job.
   工程师仔细选择了适合这项工作的圆锥形铆钉头。
3. 3.The project manager instructed the team to ensurethat all conical rivet headswere properly installed.
   项目经理指示团队确保所有圆锥形铆钉头都正确安装。