1. The echoes had pulsed themselves to silence. 回声阵阵震荡，直到沉静下来。
2. The effect of velocity pulse is significant in low damp the case. 在阻尼不是很大的情况下，速度脉冲效应是较大的。
3. The source audio essence is encoded using pulse code modulation or PCM. 源音频编码的本质是使用脉冲编码调制或PCM。
英英解释
n.
1. (electronics) a sharp transient wave in the normal electrical state (or a series of such transients)
2. the rhythmic contraction and expansion of the arteries with each beat of the heart
3. the rate at which the heart beats; usually measured to obtain a quick evaluation of a person's healt
4. edible seeds of various pod-bearing plants (peas or beans or lentils etc.) v.
1. expand and contract rhythmically; beat rhythmically
2. produce or modulate (as electromagnetic waves) in the form of short bursts or pulses or cause an app
3. drive by or as if by pulsation
