如果感染率低且慢,那么絶對宜封。如果超高超急,則確定封無效。
這說明了肯定存在一个中间值,過之則封,不過則否。等等。
如果感染率低且慢,那么絶對宜封。如果超高超急,則確定封無效。
這說明了肯定存在一个中间值,過之則封,不過則否。等等。
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