一个竞争性的理论是诱变药物通过降低对负面价值的适应性而根除病毒或细菌群体。
A competing theory is that a mutagenesis drug may eradicate a virus or bacterial population by reducing the fitness to negative values.
本论文的研究成果对于计控电器生产企业在优化营销模式、降低销售成本、扩展客户群体等诸多方面有着非常重要的工程实际意义和一定的理论研究价值。
The result of this thesis have got the actual meaning in engineering and theories research value in optimize enterprise marketing mode, lower the sale cost and expand the customer community, etc.
研究高校贫困生群体，完善高校贫困生资助体系，具有重大的理论价值和现实意义。
It has extremely important theoretical value and realistic significance to research the poor university students and perfect the subsidy system.
因此，对企业家群体成长的研究，既具有重要的理论价值，又具有极其重要的现实意义。
Therefore, researching on the growth of entrepreneurs is not only of great theoretical value, but also has extremely important practical significance.
因此，对企业家群体成长的研究，既具有重要的理论价值，又具有极其重要的现实意义。
Therefore, researching on the growth of entrepreneurs is not only of great theoretical value, but also has extremely important practical significance.
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