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:


请选择你想看的字典辞典:
单词字典翻译
16465查看 16465 在百度字典中的解释百度英翻中〔查看〕
16465查看 16465 在Google字典中的解释Google英翻中〔查看〕
16465查看 16465 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:


  • Harmonic - Wikipedia
    In physics, acoustics, and telecommunications, a harmonic is a sinusoidal wave with a frequency that is a positive integer multiple of the fundamental frequency of a periodic signal The fundamental frequency is also called the 1st harmonic; the other harmonics are known as higher harmonics
  • Harmonics and Harmonic Distortion in an Electrical System
    Harmonics are unwanted higher frequency waveforms which are superimposed on the fundamental waveform creating a distorted waveform pattern Harmonics in an AC power systems are unwanted sinusoidal voltages or currents with frequencies that are larger multiples of the systems fundamental frequency
  • Fundamental Frequency And Harmonics: What Are They?
    Harmonics are the sinusoidal voltage or current that is an integer (whole number) at a multiple of the fundamental frequency at which the supply system is designed to operate It can be expressed as a 2f, 3f, 4f, 5f,… ……,nf, etc
  • Physics Tutorial: Fundamental Frequency and Harmonics
    The most fundamental harmonic for a guitar string is the harmonic associated with a standing wave having only one antinode positioned between the two nodes on the end of the string
  • What exactly are harmonics and how do they appear?
    Many signals have a large number of harmonics, some, like a square wave, in theory infinite This is a partial construction of a square wave The blue sine which shows 1 period is the fundamental Then there's the third harmonic (square waves don't have even harmonics), the purple one
  • Basics of Harmonics in Electrical Systems:
    Harmonics are essentially distortions in the electrical power systems An electrical power system can be represented by a sinusoidal waveform which varies with time
  • Harmonics - dspguide. com
    The first harmonic is f, the second harmonic is 2 f, the third harmonic is 3 f, and so forth The first harmonic (i e , f) is also given a special name, the fundamental frequency
  • harmonic sign - Definition, Usage Quiz | H | Dictionary | Ultimate . . .
    A harmonic sign typically refers to a notation in musical scores used to indicate harmonics, which are overtones produced when a string or air column vibrates at a multiple of its fundamental frequency
  • Harmonic Analysis Symbols - Medium
    Harmonic Analysis Symbols This is a compilation of all the symbols used for harmonic analysis in this publication
  • Harmonics (electrical power) - Wikipedia
    In an electric power system, a harmonic of a voltage or current waveform is a sinusoidal wave whose frequency is an integer multiple of the fundamental frequency





中文字典-英文字典  2005-2009