water fluctuation zone

• 消落带

water fluctuation zone的用法和样例：

例句

1. Carburization of molten iron in the dropping zone of BF has been studied.
   高炉铁水渗碳的主要阶段在滴落带，炉缸内的渗碳过程不会掩盖滴落带的渗碳规律。