One of the three earths formerly confounded under the general name yttria, n.
| 单词 | θ69189 |
| 释义 | the world > matter > chemistry > elements and compounds > metals > [noun] > earths > erbia (3) erbia1868 One of the three earths formerly confounded under the general name yttria, n. Subcategories:— radical (2) |
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