| 单词 | 沥青铀矿 |
| 释义 | 〔uraninite〕A complex brownish-black mineral, UO2, forming the chief ore of uranium and containing variable amounts of radium, lead, thorium, and other elements. 沥青铀矿：黑褐色的合成矿，UO2，主矿为铀，还包括不定数量的镭、铅、钍和其他元素 〔pitchblende〕A massive variety of the mineral uraninite.沥青铀矿：铀矿的一种〔uranium〕A heavy silvery-white metallic element, radioactive and toxic, easily oxidized, and having 14 known isotopes of which U 238 is the most abundant in nature. The element occurs in several minerals, including uraninite and carnotite, from which it is extracted and processed for use in research, nuclear fuels, and nuclear weapons. Atomic number 92; atomic weight 238.03; melting point 1,132°C; boiling point 3,818°C; specific gravity 18.95; valence 2, 3, 4, 5, 6. See table at element 铀：银白色的重金属元素，有放射性并且有毒，容易被氧化。已知有14个同位素，其中U238是自然界含量最多的。这种元素存在如沥青铀矿和钒钾铀矿等几种矿中，并从中提炼和加工，主要用于研究，核燃料和核武器。原子序数为92；原子量为238.03；熔点为1,132°C；沸点3,818°C；比重18.95；化合价2，3，4，5，6 参见 element〔thorianite〕A highly radioactive blackish, greenish, or yellow mineral, ThO2, isomorphous with uraninite. 方钍矿，方钍石：与沥青铀矿同晶形的黑色、绿色或黄色高辐射性矿石，ThO2 〔Debierne〕French chemist who discovered the element actinium in pitchblende (1899) and isolated pure radium (1910).德毕叶恩，安德鲁·路易斯：(1874-1949) 法国化学家，在沥青铀矿里发现了元素锕(1899年），并分解出纯镭(1910年） |
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