The reliability model has clearly reflected the reliability logic relationship among links in surge binsystem, and has important theoretical significance and practical value.
该模型能够全面反映缓冲仓系统各环节之间在不同情况下的可靠性逻辑关系，具有重要的理论意义和实用价值。
2
If undo is implemented correctly, then there's only one destructive operation in the entire system: emptying the Recycle Bin.
如果恢复功能实现正确，整个系统只会有一个破坏性的操作：清空垃圾箱。
3
The original version of Screen was released more than 10 years ago, so chances are your system has the utility—typically named /usr/bin/screen.