英语词汇“round-the-world echo”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	round-the-world echo
释义	round-the-world echo round-the-world echo [′rau̇ndthə ′wərld ′ek·ō] (communications) A signal occurring every ¹⁄₇ second when a radio wave repeatedly encircles the earth at its speed of 186,000 miles (300,000 kilometers) per second.
随便看	beijing foreign studies university beijing foreign trade and economic cooperation beijing forestry university forest science company limited beijing globe tech consulting center beijing greenmount hi-tech development co. ltd. beijinghua beijing institute of radio metrology and measurement beijing international convention center beijing international education institute beijing international music festival and academy beijing international trust and investment corporation beijing language culture university beijing man beijing mandarin beijing municipal environmental protection bureau beijing municipality beijing municipal science & technology commission beijing new building materials beijing olympic broadcasting co., ltd. beijing olympic green convention centre beijing opera festival beijing platform for action beijing research institute of coal chemistry beijing roast duck beijing second foreign language institute

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