Typically, in an active microbial environment the polymer becomes invisible to the naked eye within 12 weeks.

通常，在一个活跃的微生物环境的聚合物成为看不见的12个星期内肉眼。

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It is the active ingredient of most (90%) of the microbial insecticides produced in the world.

是世界上生产的大多数微生物杀虫剂(90%)的活性成分。

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Soil respiration and active microbiomass were good indexes of soil microbial characters and soil enzyme.

土壤呼吸和土壤活跃微生物量是衡量土壤微生物特性和土壤酶的较好指标。

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