valve clearance

• 阀门间隙,阀余隙

valve clearance的用法和样例：

例句

1. If the spacing between mating flanges is tight, the valve sealing surface should be coated with a lubricant to prevent distortion during installation.
   如果配置的法兰之间的间隙过紧，则阀门密封面应该用润滑剂涂敷以防止在安装过程中产生扭曲变形。