| 单词 | unnilpentium |
| 释义 | unnilpentium /yooh'nil pen"tee euhm/, n. Chem., Physics. provisional name for the transuranic element with atomic number 105. Symbol: Unp Also called element 105, hahnium. [1975-80; < L un(us) ONE + nil nothing + Gk pént(e) FIVE + NL -ium -IUM] |
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