赫兹

• Heinrich rudolf hertz proves that electricity is transmitted at the speed of light
  海因里希.鲁道夫.赫兹证实电是以光速传播的。
• The difference , expressed in hertz , between the two limiting frequencies of a band
  一个频带的上下界频率之差，单位用赫兹表示。
• The hand surface temperature taken at terahertz frequency through a 15mm - thick pad of paper
  用太赫兹技术得出手部表面温度的成像。
• Last but not least are frequencies around a billionth of a billionth of a hertz
  最后一个频率范围是在几十亿分之一的几十亿之一赫兹。
• Get it ? hertz
  懂么？赫兹？
• This rate is called frequency and is measured in hertz3 , or vibrations per second
  这种速率叫做频率，计算单位为赫兹(每秒钟振动频率) 。
• Much later heinrich hertz demonstrated radio waves in a primitive manner
  隔了相当长一段时间,赫兹用一种简单的方法证明了无线电波的存在
• But it was only about 0 . 3 when the cut off frequency of target signals increased to 0 . 4 hz
  相干函数也表明在小于0 . 1赫兹时有较高的值。
• Note : for typical displays , flicker occurs at a refresh rate of40 hz or less
  注：典型的显示器出现闪烁现象是在刷新率为40赫兹或更低时。
• Standard for cylindrical - rotor 50 and 60 hz , synchronous generators rated 10 mva and above
  10mva及以上的50和60赫兹鼓形转子同步发电机标准