A mysterious element; spec. a hypothetical substance to which a galactic radio emission at 1665 megahertz was formerly attributed, later identified…
| 单词 | θ1245 |
| 释义 | the world > the universe > diffused matter > [noun] > mysterium (1) mysterium1965 A mysterious element; spec. a hypothetical substance to which a galactic radio emission at 1665 megahertz was formerly attributed, later identified… |
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