脉冲

• In this context one speaks of pulses as wave packets or wave groups .
  在这个意义下，我们把这样的脉冲叫做包波或包群。
• Position control of d. c. motors has been done by means of pulse width modulation .
  直流电机位置用脉冲宽度调制法控制。
• The enable-a signal must be released before the pulse-train inputs are enabled .
  在允许脉冲序列输入之前，A的通信号必须消失。
• Still another system is designed to send out transient pulses intermittently .
  还设计了另一种系统，它能够间歇地发送瞬间脉冲。
• The rate at which pulses can be sent and received on copper wires is called frequency .
  脉冲通过铜线送出和接收的速度称为频率。
• The visual impression is dominated by the alignment, not by the individual pulses .
  直观效果是由同相轴而不是零星的脉冲支配的。
• The duration of the quenching pulse should exceed the recovery time of the counter .
  淬火脉冲的持续时间应当超过计数器的恢复时间。
• The impulse is dependent upon the duration of the shock wave as well as its pressure .
  脉冲的大小又取决于冲击波的延续时间及其压力。
• Laser light is, of course, available as a continuous wave or in the form of pulses .
  当然，激光既可以是连续波，也可以是脉冲的形式。
• This served to create output pulses proportional to the number of electrons emitted .
  这个装置用于产生与发射电子数成正比的脉冲输出。