| 单词 | technetium |
| 释义 | technetium /tek nee"shee euhm, -sheuhm/, n. Chem. an element of the manganese family, not found in nature, but obtained in the fission of uranium or by the bombardment of molybdenum. Symbol: Tc; at. wt.: 99; at. no.: 43; sp. gr.: 11.5. [1945-50; < Gk technet(ós) artificial (lit., made, verbid of technâsthai; see TECHNO-) + -IUM] |
| 随便看 |
英语词典包含168451条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。