off heat

详细解释:【机】 失败炉次

例句：

An agent that produces cooling, especially a fluid that draws off heat by circulating through an engine or by bathing a mechanical part.冷却剂一种用来冷却的制剂，尤指通过在发动机中流动或通过冲洗某个机械部件从而带走热量的液体