It needs about 3 years that the resistance of permethrin-resistant German cockroach subsides from middle degree to low degree, and basically to non-resistance.
抗氯菊酯德国小蠊虫株由中等程度抗性转变为低抗性至基本消失需要3年。
It needs about 3 years that the resistance of permethrin-resistant German cockroach subsides from middle degree to low degree, and basically to non-resistance.
抗氯菊酯德国小蠊虫株由中等程度抗性转变为低抗性至基本消失需要3年。
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