If you don't need a property indexed (that is, you don't plan on searching a domain object by that individual property), then turning off that index probably makes sense.
This means that every time you create, update, or delete a domain class, the Lucene index is updated accordingly.
这就意味着每当您创建、更新或删除一个 domain 类时，Lucene 索引都会相应更新。
3
It is more reasonable that the dynamic performance index both in frequency domain and in time domain should be calculated from model calculated frequency response and unit-step response.