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- 01
2013-02-26
Overview of Ultrasound
Sonic refers to the human ear can feel a longitudinal wave, the frequency range of 16Hz-20KHz. When the sound wave frequency is lower than 16Hz is called secondary sound waves, higher than 20KHz is called ultrasonic sound waves.
Ultrasound has the following characteristics:
1) Ultrasonic can be in the gas, liquid, solid, solid melt and other media in the effective spread.
2... +More
- 01
2013-02-26
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