“Doppler current meter”的概念、定义、翻译、参考文献-科学参考

单词	Doppler current meter
释义	Doppler current meter [`däp·lǝr ´kǝr·ǝnt ´mēd·ǝr] ^ENGINEERING An acoustic current meter in which a collimated ultrasonic signal of known frequency is projected into the water and the reverberation frequency is measured; the difference in frequencies (Doppler shift) is proportional to the speed of water traveling past the meter.
随便看	critical damping critical density critical depth critical elevation critical equation critical equatorial velocity critical experiment critical exponent critical facility critical field critical flicker frequency critical flow critical flow prover critical frequency critical function critical gas saturation critical grid current critical grid voltage critical gun pull critical humidity critical isotherm criticality critical level of escape critical line critical locus

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