抑制高次谐波的产生，是手机设计中的关键。
The most important issue in mobile phone design is to suppress harmonics.
有限振幅的超声波在固体中传播时会发生波形畸变，伴随着高次谐波的出现。
Wave distortion will occur when finite amplitude ultrasonic waves propagate in elastic solids, resulting in the production of higher order harmonics.
采用串联电压谐振产生高压起辉，必须采取过流保护措施。 电子镇流器高次谐波的产生及其所带来的危害。
We also should take protective measures for the volt power bright spots that produced by the series voltage resonance and the higher harmonic produced by the Electronic Ballast.
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