脉冲

• A 3 bit counter can be used to count up to seven pulses .
  三位计数器就可用来累计7个脉冲。
• The desired operator is the spike doublet of figure 40 .
  欲求的因子为图40那样的脉冲偶极子。
• The background count of the detector is 4～6 counts 1 min .
  探测器的本底计数率为46脉冲1分。
• In television, the scene is translated into electric impulses .
  在电视里，场景被转变为电脉冲。
• The digital computer works on a series of electrical impulses .
  数字计算机依靠一系列电脉冲工作。
• Pressure and flow pulses may be used to keep the tubes unobstructed .
  可用压力和流动脉冲使管子畅通。
• Then the effect is to steepen the flanks of the pulse spectrum .
  因此在效果上是加大了脉冲谱翼部的陡度。
• Therefore the operator we seek is the differential of a spike .
  因此，我们欲求的因子是一个单位脉冲的微分。
• Each burst of waves lasts only about a millionth of a second .
  每个电波脉冲群仅持续约一百万分之一秒的时间。
• Those of the other pulse should be subtracted to the content of the counter .
  另一列脉冲则应从计数器中的数中减去。