In order to overcome this deficiency, the concept of activity or effective concentration was advanced.

为了克服这一缺点, 提出了活度或有效浓度的概念.

辞典例句

The most effective concentration of bee royal jelly is about 400 ppm.

比?合适的蜂皇浆浓度是400ppm左右.

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Result: The effective concentration of the three kinds of antiepileptic drugs varied in different patients.

结果: 本类药物治疗指数小,安全度较低,其作用的个体差异大.

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Failure to do drugs, to less than effective concentration, may to control the disease development.

如不按时服药, 达不到有效浓度, 就可能无法控制疾病发展.

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