The main drivers of resistance rates are not new mutations but rather antimicrobial selection pressure and transmission.
耐药比率的主要驱动因素不是新的突变，而是抗菌素的选择压力和耐药微生物的传播。
The descendants of long-time urban dwellers show increased genetically-driven resistance to tuberculosis, due to evolutionary selection pressure over millennia.
长期生活在城市的居民，其后代的遗传基因里，对肺结核的抵抗力更强。
The competition between bacteria and phages is not only the result of their own selection pressure, but also the dynamics of their co-evolution.
细菌与噬菌体间的竞争，不仅是自身选择压力的结果，也是彼此共进化的动力。
And it could also improve our take on evolutionary dynamics in systems that apparently experience selection pressure at both the individual and group levels.
而且对于在个体和群体层面都显然经受选择压力的系统，该研究结果还能增进我们对进化动力学的理解。
Removal of selection pressure revealed that the resistance of CA-R was unstable and RF decreased by 63.2% after 5 successive generations.
该抗性品系对气调的抗性不太稳定，在无选择压力的情况下经室内5代饲养，抗性衰退了63.2%。
In this paper sugarcane callus was cultured in vitro on the medium with smut toxin filter solution which was used as selection pressure in this experiment.
本试验采用甘蔗愈伤组织作离体培养，在培养基中加入甘蔗黑穗病粗毒素滤液为选择压力。
The disturbance weaken the selection pressure of the algorithm. When the disturbance has larger scale and shorter cycle, the algorithm has smaller selection pressure.
灾变的发生使整个算法的选择压力降低，当灾变规模越大、周期越短，算法的选择压力也就越小。
The disturbance weaken the selection pressure of the algorithm. When the disturbance has larger scale and shorter cycle, the algorithm has smaller selection pressure.
灾变的发生使整个算法的选择压力降低，当灾变规模越大、周期越短，算法的选择压力也就越小。
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