辅助设备(指键盘)检查时钟线，如果时低电平，禁止发送数据。
The auxiliary device checks the 'clock' line. If the line is inactive, output from the device is not allowed.
这种由精密时钟辅助GPS和气压计等组成的组合导航系统是一个理想系统。
The combination of precise clock aided GPS with a barometer is an ideal integration.
根据辅助型接收机能从 辅助网络获取导航电文的特点，提出了一种精简星历和卫星时钟参数辅助算法。
According to the feature that the AGPS(Assisted GPS) receiver can obtain navigation data from assisted network, a new algorithm for assisted Doppler is proposed.
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