因为你正在硬式磁盘机在一个备份期间传递至少可观部分，备份能降低其他的使用者的网络绩效人格。
Since you're transferring at least substantial portions of a hard drive during a backup, backups can degrade network performance for other users.
在花费了我的职业生涯的可观部分，以一个应用程序开发者的身份盯着数据库分析器之后，我能为之证明。
Having spent a considerable portion of my career as an application developer staring at a profiler, I can attest to this.
这种方法首先把一个一致稳定的系统转化成一个内部平衡系统，然后选择一个内部优势子系统作为降阶模型，该子系统可保留原系统的强可控可观部分，并有一定的稳定性。
Then an internal superior sub-system is selected as the reduced model which retains the strong controllable as well as observable parts of the system and has certain stability.
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