“ultrasonic stage recorder”的概念、定义、翻译、参考文献-科学参考

单词	ultrasonic stage recorder
释义	ultrasonic stage recorder Encyclopedia 工学超声波式水位计释 ultrasonic stage recorder超声波式水位计将换能器安装在水下或水上某一已知高程位置，通过记录换能器发射的声脉冲在换能器与水面之间的往返传播时间和声波传播速度来计算测量水位的仪器。
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