excess of ammonia

• 过量的氨

excess of ammonia的用法和样例：

例句

1. Millions of tons of ammonia are consumed annually in agriculture.
   在农业上每年要消耗成千上万吨的氨。
2. Another common problem with all SCR systems is the release of unreacted ammonia.
   另一种较常见的问题是所有可控硅系统未释放的氨。