Validator, which is called just before the CRUD operation is performed, so that the object is not yet persisted and you have the opportunity to change it before it reaches the storage area.
在CRUD操作执行之前调用，因此在对象未到达存储区域之前，对象还不是一成不变的，您可以对其进行更改。
In a storage area, a LUN often represents a SCSI disk on which a host can perform a read and write operation.
在存储区域中，LUN通常表示一个主机能够执行读写操作的SCSI磁盘。
Through analysis of the effectiveness related to locations. Storage area and operation of relief tidal flood, it is shown that this measurement is feasible and available.
通过纳潮效果与纳潮闸位置，调蓄面积，操作方式等因素的关系分析，表明纳潮是一种可行且有效的方法。
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