hz

• Specifications for magnetic flux density and electric field strength meters - 10 hz to 3 khz
  磁通量密度和电场强计的规格. 10hz - 30khz
• 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。
• Comparison the of the excellence s enlarger ring the scope general at 18 hz 20 khzs s
  比较优秀的放大器的频响范围一般在18hz 20khz之间。
• 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
• The laboratory offers calibration for phasemeters in frequency range 1 hz to 100 khz
  相位计本所为频率1hz至100khz的相位计提供校正服务。
• The bandwidth was 150 hz and the effect in all measurements was between 1 - 10 microvolts
  带宽是150赫兹，并且用测量方法的影响是在1 ? 10微伏。
• Pre - recorded optical reflective videodisk system . " laser vision " 50 hz 625 lines pal
  预录制的光学反射视盘系统. 50 hz 625行pal制"激光视盘
• The traditional inverters include generally a 50 or 60 hz trastormer for raising the output voltage
  从仿真的结果来看，证明了该方案的可行性。
• For hearing , 20hz is the lower limit of frequency and 20 , 000 hz is the upper limit
  对于人的听觉来说， 20赫兹是频率的下限， 20 , 000赫兹是频率的上限。