当水平方向偏转电压为正弦信号时，屏上电子的扫描轨迹也按正弦规律变化。

When exert a sine signal, the trace of electron beam on screen also changes along sine signal.

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当水平方向偏转电压为正弦信号时，屏上电子的扫描轨迹也按正弦规律变化。

When exert a sine signal, the trace of electron beam on screen also changes along sine signal.

youdao