英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：

VHF    
甚高频

甚高频

VHF
n 1: a group of illnesses caused by a viral infection (usually
restricted to a specific geographic area); fever and
gastrointestinal symptoms are followed by capillary
hemorrhage [synonym: {hemorrhagic fever}, {haemorrhagic fever},
{viral hemorrhagic fever}, {viral haemorrhagic fever},
{VHF}]
2: 30 to 300 megahertz [synonym: {very high frequency}, {VHF}]

34 Moby Thesaurus words for "VHF":
AF, CPS, EHF, HF, Hz, MF, RF, SHF, UHF, VLF, audio frequency,
carrier frequency, cycles, extremely high frequency, frequency,
frequency spectrum, hertz, high frequency, intermediate frequency,
kilocycles, kilohertz, low frequency, lower frequencies,
medium frequency, megacycles, megahertz, radio frequency,
spark frequency, spectrum, superhigh frequency,
ultrahigh frequency, upper frequencies, very high frequency,
very low frequency


请选择你想看的字典辞典：
单词字典翻译
VHF查看　VHF　在百度字典中的解释百度英翻中〔查看〕
VHF查看　VHF　在Google字典中的解释Google英翻中〔查看〕
VHF查看　VHF　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Very high frequency - Wikipedia
    Very high frequency (VHF) is the ITU designation [1] [2] [3] for the range of radio frequency electromagnetic waves (radio waves) from 30 to 300 megahertz (MHz), with corresponding wavelengths of ten meters to one meter Frequencies immediately below VHF are denoted high frequency (HF), and the next higher frequencies are known as ultra high frequency (UHF)
  • Maricopa County, Arizona (AZ) Scanner Frequencies and Radio Frequency . . .
    Maricopa County Project 25 Phase II: Sheriff and Maricopa County Services: Regional Wireless Cooperative (RWC) Project 25 Phase II: Phoenix FD and many other Valley fire operations are dispatched by Phoenix Regional Fire Dispatch, operations are mostly on the RWC and some discrete VHF channels listed under Phoenix
  • The Differences Between UHF and VHF Radio Frequencies
    Low-band VHF serves radio-controlled toys, wireless mikes, cordless phones, and other low-cost equipment options For more professional applications, high-band VHF is a great choice The lowest level of high-band VHF (169-172 MHz) can be used all over the country without fear of disruption by television broadcasting
  • VHF vs UHF Radios: The Differences Explained - Stryker Radios
    What are UHF and VHF? UHF, short for “Ultra High Frequency,” and VHF, short for “Very High Frequency,” are two types of radio frequencies The UHF low band goes from 378 to 512 Megahertz (MHz) and the high band from 764 to 870 MHz On the other hand, VHF’s low band ranges from 49 to 108 MHz, and its high band from 169 to 216 MHz
  • What is VHF radio, and how is it different from UHF?
    VHF radio is ideally suited for tactical communications The science behind VHF and UHF Differences of frequency and wavelength between VHF and UHF bands result in unique features for both categories VHF VHF refers to radio waves operating in the range of 30 to 300 megahertz with a shorter wavelength than high-frequency (HF) bands
  • UHF vs VHF - Learn about radio frequencies - Radio Depot
    In general, VHF radios operate in the 138-174 MHz frequency band and UHF radios operate in the 400-512 MHz frequency band making UHF roughly three times higher in frequency than VHF One important characteristic of radio waves is the wavelength which is the distance between peaks on a wave:
  • VHF | Marine, Airwaves Radios | Britannica
    VHF, conventionally defined portion of the electromagnetic spectrum including any radiation with a wavelength between 1 and 10 metres and a frequency between 300 and 30 megahertz VHF signals are widely employed for television and radio transmissions In the United States and Canada, television
  • Understanding the Principle of VHF - ShallBD
    The principle of VHF (Very High Frequency) refers to the use of radio waves with frequencies between 30 and 300 megahertz This article provides an overview of how VHF works and its applications in various industries, including broadcasting, aviation, and maritime communication Learn about the advantages and limitations of VHF technology and its role in modern communication systems
  • UHF vs. VHF - Whats the Difference? - This vs. That
    UHF (Ultra High Frequency) and VHF (Very High Frequency) are two different frequency bands used for various communication purposes UHF operates in the frequency range of 300 MHz to 3 GHz, while VHF operates in the range of 30 MHz to 300 MHz One key difference between UHF and VHF is their wavelength
  • Very High Frequecy (VHF) | Advanced Navigation
    VHF is commonly used in aviation, marine communication, television broadcasting, and radio navigation due to its ability to transmit over long distances with relatively low interference In navigation and aviation, VHF is crucial for systems like VOR (VHF Omnidirectional Range) and voice communication between aircraft and control towers Its





中文字典-英文字典  2005-2009