COD wasn't the key factor of microbial control.
COD不是细菌控制的关键因子。
Dissolved ozone levels should be monitored in storage and distribution systems that utilize ozone for microbial control.
应当在使用臭氧来控制微生物的存储和分配系统中对溶解的臭氧含量进行监测。
In Yunnan Province, however, it is weak in microbial control of insect pests due to lack of basic and applied research on fungal biocontrol agents.
然而，云南在害虫微生物防治领域的基础薄弱，有深度的研究工作不多。
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