管道、阀门和水封装置冻结时，只能用热水或蒸汽加热解冻，严禁使用明火烘烤。
When Pipes, valves and water seal equipments is freezing, only hot water or steam heating can be use to thaw, and open fire is prohibited.
管道、阀门和水封装置冻结时，只能用热水或蒸汽加热解冻，严禁使用明火烘烤。
When Pipes, valves and water seal equipments is freezing, only hot water or steam heating can be use to thaw, and open fire is prohibited.
应用推荐