“gravel mine”的概念、定义、翻译、参考文献-科学参考

单词	gravel mine
释义	gravel mine [`grav·ǝl ´mīn] ^{MINING ENGINEERING} A mine extracting gold from sand or gravel. Also known as placer mine.
随便看	transmission gain transmission gate transmission grating transmission interface converter transmission level transmission line transmission-line admittance transmission-line attenuation transmission-line cable transmission-line constants transmission-line current transmission-line efficiency transmission-line impedance transmission-line parameters transmission-line power transmission-line reflection coefficient transmission-line theory transmission-line transducer loss transmission-line voltage transmission loss transmission mode transmission modulation transmission oil transmission plane transmission primaries

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