The problem that the lack of raw materials for biogas production in rural area was solved by using agricultural straw.
利用农作物秸秆作为产沼气的原料，解决了农村产沼气发酵原料缺乏的问题。
The problem that the lack of raw materials for biogas production in rural area was solved by using agricultural straw.
利用农作物秸秆作为产沼气的原料，解决了农村产沼气发酵原料缺乏的问题。
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