chemical dosing

• 投药

chemical dosing的用法和样例：

例句

1. After the short-cut nitrification was realized, chemical dosage could be saved and short-cut nitrification maintained by means of changing the chemical dosing method.
   当短程硝化反应实现后，通过改变投药方式可节省投药量并维持短程稍化反应。