It USES a minimum supply of water and produces oxygen instead of toxic gases, which are the by-product of pesticides.
系统采用最低水量，可产生氧气，因而不存在杀虫剂释放有毒气体的问题。
It USES a minimum supply of water and produces oxygen instead of toxic gases, which are the by-product of pesticides.
系统采用最低水量，可产生氧气，因而不存在杀虫剂释放有毒气体的问题。
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