求翻译：测量一个未知频率的信号时，应从最快时基起尝试进行波形采集，然后逐渐选择慢一些的时基，直到信号能够正确显示。否则，由于“混叠效应”的影响，波形可能没有正确反映信号的实际情况。是什么意思？

Measure an unknown frequency signal from the fastest time base from the waveform acquisition attempt, and then gradually select the slower time base until the signal can be displayed correctly. Otherwise, due to "aliasing effect", the signal waveform may not correctly reflect the actual situation.

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When surveys an unknown frequency the signal, should attempt from the quickest time base carries on profile gathering, then chooses the slow some time bases gradually, can demonstrate correctly until the signal.Otherwise, because “aliasing effect” the influence, the profile possibly does not have th

When measuring an unknown frequency signals from the fast waveform acquisition time base attempted, then gradually selected slow time base until the signal appears correctly. Otherwise, as "aliasing effect" impact waveform may not properly reflect the actual situation of signals.

Measure an unknown frequency signal from the fastest time base from the waveform acquisition attempt, and then gradually select the slower time base until the signal can be displayed correctly. Otherwise, due to "aliasing effect", the signal waveform may not correctly reflect the actual situation.