As a new and environmental pig-keeping technology, the method of biological fermentation bed was widely paid attention to domestically and abroad.
结合国内外的应用状况，笔者对生物发酵床养猪的技术原理及优缺点进行了探讨。
The fan for keeping ventilation of the pig barn.
猪舍中保持通风的风扇。
The fan for keeping ventilation of the pig barn.
猪舍中保持通风的风扇。
应用推荐