“pernicious trend”的概念、定义、翻译、参考文献-科学参考

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单词	pernicious trend
释义	pernicious trend 恶性趋向
随便看	pulse therapeutic device pulse threshold energy pulse time pulse time code pulse time demodulator pulse time distribution pulse time division multiplex pulse time division system pulse-time jitter pulse-time-modulated radiosonde pulse time modulation pulse time modulation(PTM) pulse-time modulation system pulse time multiplex pulse timer pulse-time ratio pulse timing pulse timing circuit pulse-timing marker oscillator pulse timing-marker oscillator pulse to bar ratio pulse-tone audiometer pulse top pulse top clipper pulse top clipper circuit