名词
中文翻译：次级振荡器
同义词：
['second-order oscillator', 'secondary generator']
例句：
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1. The deviceis a secondary oscillator that can generate multiple frequencies.
这个装置是一个次级振荡器，可以产生多个频率。
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2.The second-order oscillator was used to detect the presence of a foreign object in the air.
次级振荡器被用来检测空气中是否存在外来物体。
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3. The secondary oscillator was responsible for maintaining the stability of the system.
次级振荡器负责维护系统的稳定。