The name stems from the waveform's appearance on a scope; it looks like the teeth of a hand saw.
锯齿波的名字来源于示波器上其波形的形状，它看上去就像是手锯的齿一样。
Men used to cut trees with hand saw. But now, by using electronic saw they can cut down a tree in only a few minutes.
人类过去用手锯锯树，但是现在，用电锯可在几分钟内锯倒一棵树。
Men used to cut trees with hand saw. But now, by using electronic saw they can cut down a tree in only a few minutes.
人类过去用手锯锯树，但是现在，用电锯可在几分钟内锯倒一棵树。
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