To rebuild a file system, use the -r switch.
要重建一个文件系统，可使用-r 命令行开关。
We used the -r switch to select the appropriate version tag.
我们使用-r开关选择适当的版本标记。
The f switch tells the command to automatically fix errors and the r switch locates bad sectors and recovers readable data.
f开关告诉命令去自动修理错误，r开关则定位坏的扇区并恢复可读数据。
Isolation of the T/R switch must be considered when the high power transmitter is connected to the low power radio frequency unit by T/R switch as the radar antennas are reciprocal.
雷达天线往往收发共用，通过收发开关连接高功率发射单元和低功率射频单元要考虑收发开关的隔离度问题。
Isolation of the T/R switch must be considered when the high power transmitter is connected to the low power radio frequency unit by T/R switch as the radar antennas are reciprocal.
雷达天线往往收发共用，通过收发开关连接高功率发射单元和低功率射频单元要考虑收发开关的隔离度问题。
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