Seasonal diseases in the spring is related with the balance of micro-ecology on the upper respiratory tract.
春季时令病邪致病与上呼吸道微生态平衡与否相关；
2
In the system of bio-film, micro-ecology of bio-film was more stable than activated sludge's after introduction-culture and co-operation compound bacterium.
在生物膜系统中通过引种和共培养复合菌群后，生物膜微生态系统较活性污泥微生态系统更加稳定。
3
The occurrance of exogenous disease is not only influenced by the effect of seasonal exogenous pathogenic factors, but also related with the micro-ecology balance of respiratory tract on human body.