The Study of a High Precision Ultrasoni Sound Veloity Measurement System
碩士 === 義守大學 === 電機工程研究所 === 85 === The sound velocity is a very important parameter for many ultrasonic based measurements. Most of the airborne type ultrasonic measurement systems are assume the sound velocity to be a constant (348∼360m/s) when operate. Some of them can measure the room temp...
| Main Authors: | , |
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| Format: | Others |
| Language: | zh-TW |
| Published: |
1997
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| Online Access: | http://ndltd.ncl.edu.tw/handle/04795528238587288711 |