求翻译：如需要改变显示波形的数量或改变显示波形的幅度，可以按压F2键和 ←→ 键改变时基（波形显示多少）；按压F3键使设置变为“幅度”，通过按压 ←→键改变显示波形幅度（波形大小）。是什么意思？

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Displays a waveform if need to change the quantity or change the display of the waveform increases could F acupoints 2 type and ←→ type when there is a change in how many); acupoints (waveform display F 3 key to bring change to the "Settings" and, through squeezing margins ←→ type change the display

If needs to change the demonstration profile quantity or the change demonstration profile scope, may hold back the F2 key and ←→ the key changes the time base (profile to demonstrate how many); Holds back the F3 key to cause the establishment to become “the scope”, through holds back ←→ the key to c

If need to change the display or change the number of waveform displays the amplitude of the waveform, you can press the F2 key and ←→ key to adjust the time base (waveform display), press the F3 key to make the set go "amplitude", by pressing ←→ key to adjust the displayed waveform amplitude (size

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