本发明用于沼气池加热中。
在研究现场兴建了一批户用沼气池，在沼气池的进口和出口监测处理效果。
The family size biogas tanks were built in the study site. Their effects were monitored.
在研究现场兴建了一批户用沼气池，在沼气池的进口和出口监测处理效果。
The family size biogas tanks were built in the study site. Their effects were monitored.
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