You can also use it to release the selected quantity.
您也可以使用它来释放选定的数量。
Under the selected factors and levels, nitrogen release quantity from the mature substrate of wetland was investigated by orthogonal experiments.
通过正交试验考察了成熟湿地基质在选定的影响因素及水平下的氮释放量。
The type and quantity of adding agents have been studied, and the optimum composition and technological condition have been selected.
对所需添加剂的品种及用量进行了研究，选出了最佳配方及工艺条件。
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