And, along with physical activity, food quality is just as important as quantity, he says.
而且他说，与身体锻炼一样，食物的质量和数量同样重要。
Objective To isolate and purify collagenase with high quantity and activity.
目的分离获得高产量、高比活性的胶原酶。
The result showed that the activity was different to the change of quantity of nitrogen.
研究结果，硝酸还原酶活性随氮素用量不同而发生变化。
The result showed that the activity was different to the change of quantity of nitrogen.
研究结果，硝酸还原酶活性随氮素用量不同而发生变化。
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