名词
中文翻译：次声频率
同义词：
['subharmonic', 'infrasound例句：1. The scientist detected the infra-acoustic frequency of the earthquake.（科学家探测到了地震的次声频率。）']
例句：
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1. The scientist detected the infra-acoustic frequency of the earthquake.
科学家探测到了地震的次声频率。
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2.The sound waves were transmitted through the air to reach the ground.
声波通过空气传播到地面。
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3. The infra-acoustic frequency is a crucial factor in determining the health of the environment.
次声频率是决定环境健康的关键因素。