You need to perform a full offline backup because after changing the logging type, this type of backup is required in order to later be able to perform a restore to point in time.
您需要执行完全离线备份，因为在更改日志记录类型后，为了以后能执行时间点恢复，需要这种类型的备份。
We show existence results for multiple sign-changing solution for third-order two- point boundary value problems by using the fixed point index and the topologic degree theory.
主要研究一类三阶两点边值问题变号解的存在性和多重性，利用不动点指数和拓扑度理论等得到了新的结论。
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