其中的一个共同之处就是实现并保持食品中的微生物学安全性。
One common aspect was that of achieving and maintaining microbial safety in the product.
排放初滤水，对反冲洗水进行混凝沉淀预处理后再回收，能提高滤后水的微生物学安全性。
The microbiological safety of filtered water can be improved by discharging initial filtered water and recovering backwash water after coagulation and sedimentation pretreatment.
他还说：“当你看了生物学以后就会发现，任何级别的烟雾含量都是不安全的。”
"When you look at the biology, there is no safe level of exposure to tobacco smoke," he says.
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