名词
中文翻译：音叉
同义词：
['acoustic resonator', 'sounding bar例句：1. The scientist used a crystal acoustica to measure the frequency of sound waves.（科学家使用一个声学振子来测量声波的频率。）']
例句：
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1. The scientist used a crystal acoustica to measure the frequency of sound waves.
科学家使用一个声学振子来测量声波的频率。
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2. The instrument is crucial in the study of acoustics.
这个仪器在声学研究中至关重要。
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3. The sounding bar was used to detect the presence of water molecules in the air.
声学振子被用来探测空气中水分子的存在。