| 单词 | didymium |
| 释义 | didymium /duy dim"ee euhm, di-/, n. Chem. a mixture of neodymium and praseodymium, formerly thought to be an element. Symbol: Di [ < NL < Gk dídym(os) twin (see DIDYMOUS) + -IUM; so named by Swedish chemist Carl Mosander (1797-1858), who discovered it in 1843, from its close association with lanthanum] |
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