In their elementary composition, the enzymes show the usual proportion of c, h, n, and s found in proteins.
从元素组成来看，酶显示出与通常蛋白质一样的碳，氢，氮及硫的元素比例。
The effect of N acylation on the solubility and crystallinity of chitosan and the effect of reactive time, temperature and proportion on degree of deacetylation were investigated.
研究了N-酰化反应对壳聚糖溶解性能和结晶性能的影响以及反应时间，温度，配比对脱乙酰度的影响。
The field experiment was conducted to study the effect of organic N and mineral N combined application proportion in greenhouse celery production.
研究了田间试验条件下有机N与无机N不同配比对温室芹菜生产的影响。
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