脉冲

• A "1" is indicated by a data pulse, occurring in the middle of the bit cell interval .
  数据“1”则表示在单元间隔的中间有数据脉冲的存在。
• To exclude the γ-ray counts, all pulses below a fixed level are rejected .
  为了剔除射线的计算，也就剔除了低于某一固定水平的所有脉冲。
• Integrating devices use the photo cell pulse output to determine total amount of turning .
  积分装置利用光电池的脉冲输出来确定旋转的总量。
• When soft-sector is used, one pulse is issued per revolution at the beginning of a track .
  当使用软磁段时，在每一圈的磁道起点发出一个脉冲。
• A microprocessor designer may decide to make all instructions last five clock pulses .
  微处理机设计人员可以决定使所有的指令持续五个时钟脉冲。
• At low frequencies , such as 10 per sec. , pulsation is sensed rather than vibration .
  在低频率（譬如每秒十次）时，所感觉到的是脉冲而非振动。
• The experimental telephone's ring is activated by pulses sent through a glass fiber .
  这种实验性电话铃是依靠玻璃纤维所传送的脉冲激发而工作的。
• This is called the dead time, or the time within which a second pulse of light is not detected .
  这段时间叫做死时间或不能测量第二个光脉冲的时间
• From the sa node, electrical impulses spread through the heart muscle to trigger the heartbeat .
  从窦房石结出来的电脉冲传播到心脏肌肉触发心脏跳动。
• Whether the nonuniform pulse density is immaterial, of course, depends on the specific application .
  脉冲密度的不均匀性是否有害，应由具体应用决定。