air-chamber acoustic waves frequency fc 气室声学驻波率
low-frequency waves 低频波动
continuous waves and frequency 连续波频率
Ultrahigh frequency waves 超高频波
low frequency plasma waves 低频电磁波
high-frequency sound waves 高频声波
Their instruments detected very faint radio waves at a frequency of 3 kilohertz.
他们的仪器探测到了频率为3千赫的非常微弱的无线电波。
Regular repeating actions such as sound waves, light waves, or radio waves have a certain frequency, or number of waves per second.
有规律的重复活动如声波、光波、无线电波都有一个特定的频率,或者说是每秒的波动次数。
You can't hear waves of such a high frequency.
你听不到这么高频率的声波。
So, we should be able to look at different types of waves and be able to figure out something about both their frequency and their wavelength and know the relationship between the two.
我们可以看到,不同的波并从它们的,波长和频率中,获得一些信息,我们知道。
So, it's up on this screen here now, so we'll work on the other one. If you can identify which of these statements is correct based on what you know about the relationship between frequency and wavelength and also just looking at the waves.
它们之间的关系,现在在大屏幕上了,鉴于你们知道,频率和波长的关系,看到这些波你们来,判断下这些说法是否正确。
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