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Nowadays, people pay more attention to the harm of harmonic.
谐波的危害已得到了人们越来越多的认识和重视。
youdao
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The cause, harm and effect of harmonic wave were introduced.
介绍了谐波的产生原因、危害及影响。
youdao
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The cause, harm and effect of harmonic wave were introduced.
介绍了谐波的产生原因、危害及影响。
youdao