微生态平衡是指正常微生物群与其宿主生态环境在长期进化过程中形成生理性组合的动态过程，这种动态不会引起疾病，就被称为微生态平衡
春季时令病邪致病与上呼吸道微生态平衡与否相关；
Seasonal diseases in the spring is related with the balance of micro-ecology on the upper respiratory tract.
外感病发病与否除时令外邪的致病因素外，还与人体上呼吸道微生态平衡相关；
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.
乳酸菌广泛用于食品发酵工业中，可用于维持胃肠道微生态平衡，预防和治疗人类与动物疾病。
Lactic acid bacteria are not only widely used in the fermentation, but also used as probiotics to maintain the balance of gastrointestinal tract to therapy and prevent diseases.
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