mini system的用法和样例：
例句
- Can be a small system or a large grid electricity generating facility.
可以是一个小系统，也可以是一大组互连的发电设施。 - The security management of the regoinal system is summarized and has a giuding value to future Shanghai Grid with sectionalized levels and areas.
不仅对现运行小系统的安全稳定工作是个总结，对今后上海电网分层分片运行之后的区域性电网安全稳定运行也具有指导和借鉴意义。
