crown face

• 圆弧面,凸面(皮带轮、 轴承承载鞍等),顶面

crown face的用法和样例：

例句

1. Face-to-Face dimensions of standard raised face flanged end valves are shown on catalog pages covering dimensions for each valve.
   标准凸面法兰端口阀门的面对面尺寸在每个阀门的介绍页面中列出。
2. On special application, Pacific valves can be supplied with special end flange facings other than the raised face or ring joint.
   对于特殊的应用环境，美国太平洋阀门可提供与凸面或环连接不同的特殊端口法兰面。