... ultrasonic fetal pulse detector 超声胎音测定仪 ultrasonic pulse 超声波脉冲 ultrasonic pulse method 超音波脉波法 ; 测混凝土强度的 ...
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蝙蝠会发出我们听不到的非常高的超声波脉冲。
The bat emits these ultrasonic pulses, very high pitch sound waves that we cannot hear.
在传输过程中的超声波脉冲电压幅度约80v的聚丙烯。
During the transmission the voltage amplitude of the ultrasonic pulse is approximate 80v pp.
如果该对象是在一个更大的角度斜，没有任何的超声波脉冲反射。
If the object is canted at a greater Angle, there is no reflection of the ultrasonic pulses.
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