英语词汇“hyperacoustic zone”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	hyperacoustic zone
释义	hyperacoustic zone hyperacoustic zone [¦hī·pər·ə¦kü·stik ‚zōn] (geophysics) The region in the upper atmosphere, between 62 and 100 miles (100 and 160 kilometers), where the distance between the rarefied air molecules roughly equals the wavelength of sound, so that sound is transmitted with less volume than at lower levels.
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