“nadir”的概念、定义、翻译、参考文献-科学参考

单词	nadir
释义	nadir [`nā·dǝr] ^ASTRONOMY That point on the celestial sphere vertically below the observer, or 180° from the zenith. ^OCEANOGRAPHY The point on the sea floor that lies directly below the sonar during a survey.
随便看	radio direction finder radio direction-finder station radio direction finding radio Doppler radio duct radio echo radio echo observation radioecology radioelectric meteorology radio element radio emission radio energy radio engineering radio facility chart radio facsimile system radio fadeout radio fan-marker beacon radio field intensity radio field-to-noise ratio radio fix radio fixing aid radio frequency radio-frequency alternator radio-frequency amplifier radio-frequency bandwidth

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