... 竖龙骨,直立龙骨 vertical keel 特高频 very high frequency (VHF) 裕干舷船 vessel with上传：aimar928 ...
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以比调幅广播更高的保真度传播音乐和声音。对频率调制而言，话筒处接受的音量越大对应发射信号的频率越高。调频广播工作于甚高频段（Very High Frequency，VHF）。频段越高，其所拥有的频率带宽也越大，因而可以容纳更多的电台。同时，波长越短的无线电波的传播也越接近
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very high frequency direction finder [通信] 甚高频测向器 ; 甚高频测向仪
very high frequency direction finding 甚高频测向
very-high frequency band 甚高频频带 ; 甚高频段
very-high-frequency television modulator 甚高频电视调制器
very high frequency signal generator 甚高频信号发生器
Very High Frequency Communication 甚高频通信
Very High Frequency Radio Telephone 甚高频无线电话
high-very-high frequency 上限甚高频
VHF Very high frequency 甚高频 ; 超高频无线电
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N a radio-frequency band or radio frequency lying between 30 and 300 megahertz 甚高频 ( abbr: VHF)
Ultrasound is used by many animals that detect and some of them send out very high frequency sounds.
许多动物都用超声波来进行侦查，有些动物还能发出非常高频的声音。
Can you hear it? Very high frequency.
能听到吗？，很高的频率。
I have here a tuning fork which generates 4,000 Hertz, a very high frequency.
这个音叉，产生4000的赫兹，一个很高的频率。
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