基本解释报警单向阀 警报止回阀英汉例句双语例句Workers shall operate normally and check pressure gauges, alarm and safety valve pipe flow regular.切记工人须按正规操作,经常检查压力表、报警器、安全阀管道畅通。alarm check valve更多例句专业释义交通运输工程报警信号检查阀