名词
中文翻译：次级振动
同义词：
['subordinate vibration', 'secondary oscillation']
例句：
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1. Themachine's secondary vibration is causingthe noise.
这台机器的次级振动导致了噪音。
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2. The scientist observed the secondaryvibration of the material under stress.
科学家观察到了材料在应力下产生的次级振动。
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3. The engineer designed a system to detectand mitigate secondary vibrations inthe building.
工程师设计了一个系统来检测和减轻建筑物中的次级振动。