The CROSSCHECK command synchronizes the logical records of RMAN backups and copies with the files on storage media.

CROSSCHECK命令同步RMAN备份和存储介质上副本的逻辑记录。

As both insulator and energy storage media, de-ionized water combines the advantages of high relative permittivity(is about 80), self repairability, low cost and ease of handling.

水介质具有高的相对介电常数(约80),而且具有自我恢复的能力,在脉冲功率系统中被广泛应用。