双语例句
Screwed connection valves are not permitted for control valves and actuated on-off valves unless piping specification does not allow the use of flanges.
调节阀和受驱动的开关阀不允许使用螺纹连接的阀门，除非配管规范不允许用法兰。
词典释义：
screwed connection
时间: 2026-03-12 02:37:53
螺纹接头