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本文讨论了氦膜上自旋极化氢(H↓)气体超流吸附膜中声模式,与由于膜厚变化引起的氦膜第三声不同,它主要是气膜可压缩性引起的二维第四声。The mode of sound in gaseous superfluid film of spin polarized hydrogen atoms (H↓) absorbed on helium film is discussed. Principally, it ia the fourth sound in two dimensions resulting from compressibility of the gaseous film and different from the usual third sound resulting from the variances of thickness of helium film.
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