名词
中文翻译：频率变化
同义词：
['frequency variation', 'frequency shift']
例句：
-
1.The frequency of earthquakes has increased in recent years.
近年来地震的频率有所增加。
-
2.The frequency of traffic accidents is decreasing due to the implementation of stricter regulations.
由于实施更严格的规定，交通事故的频率正在下降。
-
3.The frequency of this disease has been increasing in recent years.
这种病的发病率在近年来一直在上升。