名词
中文翻译：频率
同义词：
['rate', 'quantity', 'magnitude']
例句：
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1.The frequency of the signal is 100 Hz.
信号的频率是100赫兹。
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2. The frequency of light in this region is very high.
这个区域的光频率非常高。
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3.The frequency of the vibrations depends on the mass and stiffness of the material.
振动的频率取决于材料的质量和刚度。