基本解释[交通运输工程]舷侧排水阀舷外排出阀舷外排洩阀词组短语短语Overboard boiler discharge valve 舷侧锅炉泄放阀drain pump overboard discharge valve 舱底泵的舷外排水阀;舱底水泵舷外排水阀overboard discharge valve ventilating system 舷侧排水阀专业释义交通运输工程舷侧排水阀舷外排出阀舷外排洩阀