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来源:雅诚德英语网
You've got a sound wave traveling merrily along through one medium, when suddenly it hits a different medium, what does gonna happen then?
声波在一种介质中顺畅地传播,突然触及了不同的介质,这时会发生什么?
You've got a sound wave traveling merrily along through one medium, when suddenly it hits a different medium, what does gonna happen then?
声波在一种介质中顺畅地传播,突然触及了不同的介质,这时会发生什么?