系统停机状态，系统默认运行级别不能设置为0，否则不能正常启动，机器关闭。
0 system shutdown state, the system can not be set to the default operating level of 0, otherwise it can not start, the machine off.
基础结构必须适应各种可能性，如某些使用者无法在临时停机的情况下保留其会话状态。
The infrastructure must accommodate possibilities such as some consumers being unable to retain its conversational state across temporary outages.
如果出现问题，他们会自动停机，热量就会消散，它基本上会自己回到自然状态，不会有物质进入或者排出。
If something goes wrong they will be shut down automatically, the heat will be dispersed, and it will bring itself basically to a neutral state where there will be nothing coming in or out.
应用推荐