常见例句双语例句As viewed from water recycle and its recycle ratio, safety of flue gas cooler was discussed. That the very first 5 days after start up its the dangerous period.主要从水循环和循环倍率的角度，谈高温取热炉的安全性，并特别强调开工5天内是高温取热炉的危险期。 返回 recycle cooler