crown face的用法和樣例：
例句
- Face-to-Face dimensions of standard raised face flanged end valves are shown on catalog pages covering dimensions for each valve.
標準凸面法蘭埠閥門的面對面尺寸在每個閥門的介紹頁面中列出。 - On special application, Pacific valves can be supplied with special end flange facings other than the raised face or ring joint.
對於特殊的應用環境，美國太平洋閥門可提供與凸面或環連接不同的特殊埠法蘭面。
