DB 2恢复命令调用DB2包含在数据库备份映像中的代理，然后DB 2代理通过与安全服务器通信对其进行解密。
The DB2 restore command invokes the DB2 agent contained in the database backup image, and the DB2 agent decrypts it by communicating with the security server.
该方法实现简单，但存在缺陷：由于附加块信息不同于正常通信过程，恶意用户容易察觉通信具有密钥恢复功能，使用数据包过滤方法，就可以完全屏蔽密钥恢复功能。
The implementation is practical but with obvious disadvantage: the illegal user can easily notice the key recovery, and by data package filtering, the key recovery function can be screened.
对于由链路出错所引起的数据包丢失，可以明显加快发送窗口的恢复速度，从而大大提高卫星链路中tcp的吞吐量。
For the packet loss caused by the link error, it can recover the congestion Windows quickly, so the goodput of TCP in satellite net can be improved.
增加数据包校验位，保证数据传输的一致性；通过正向替换和逆向替换消除并恢复数据中存在的保留关键字；
The data packet increased checking parity can ensure data consistency in transmission, to remove and recover a reserved keyword of data though the positive replacement and reverse replacement.
所述接收机对已接收的物理层包执 行互补处理以恢复所述多路复用协议数据单元。
The receiver performs the complementary processing on the received PHY packets to recover the MUX-PDUs.
所述接收机对已接收的物理层包执 行互补处理以恢复所述多路复用协议数据单元。
The receiver performs the complementary processing on the received PHY packets to recover the MUX-PDUs.
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