secondary relief valve的意思|示意
二级安全阀
secondary relief valve的网络常见释义
辅助安全阀 ... secondary regulator valve；辅助调节器阀 secondary relief valve；辅助安全阀 secondary reservoir；辅助储气罐 ...
secondary relief valve相关短语
1、 secondary brake relief valve 辅助制动安全阀
2、 secondary pressure relief valve 辅助安全阀
3、 secondary air cnjection relief valve 二次空气喷射减速压阀