在一个选择期间向多个扫描布线施加扫描信号。
In one select period, a scanning signal is applied to a plurality of scan interconnections.
野外记录的扫描信号变化时，必须有详细记录。
Detailed note is necessary when field sweep signal is changed.
介绍了利用直接数字合成技术产生频率扫描信号的新方法。
A novel method of direct digital synthesizing frequency sweep signal is presented.
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