简明英汉词典
radium
[5reidjEm]
n.
[化]镭
美国传统词典[双解]
radium
ra.di.um
AHD:[r3“d?-…m]
D.J.[6reidi8*m]
K.K.[6redi*m]
n.Symbol Ra (名词)符号 Ra
A rare, brilliant white, luminescent, highly radioactive metallic element found in very small amounts in uranium ores, having 13 isotopes with mass numbers between 213 and 230, of which radium 226 with a half-life of 1,622 years is the most common. It is used in cancer radiotherapy, as a neutron source for some research purposes, and as a constituent of luminescent paints. Atomic number 88; melting point 700=C; boiling point 1,737=C; valence 2.See table at element
镭:一种稀有的、有白色光泽、发光、高度放射性的金属元素,极少量地存在于沥青矿中,有13种同位素,质量数介于213和230之间,最常见的为镭226,半衰期为1,622年。镭可用于癌症的放射治疗,在其它一些研究中用作中子源,还可用作发光颜料的成分。原子序数88;熔点700=C;沸点1,737=C;原子价2参见 element
语源
(1)Latin radius [ray]
拉丁语 radius [射线]
(2)-ium
-ium
现代英汉词典
radium
[5reIdIEm]
n.
〈化〉镭(元素符号为: Ra):
to have radium treatment
接受镭放射治疗
现代英汉综合大辞典
radium
[5reidjEm]
n.
【化】镭 (88号元素, 符号Ra)
radium emanation
镭(放)射气
[七国语言]英汉地质大词典
radium
镭
[七国语言]英汉地理大词典
radium
镭
[七国语言]英汉电子工程大词典
radium
镭
[七国语言]英汉化学大词典
radium
镭
[七国语言]英汉机械大词典
radium
镭
[七国语言]英汉矿业大词典
radium
镭
[七国语言]英汉物理大词典
radium
镭
[七国语言]英汉冶金大词典
radium
镭
[七国语言]英汉原子能大词典
radium
镭
美国传统词典
radium
ra.di.um
AHD:[r3“d?-…m]
D.J.[6reidi8*m]
K.K.[6redi*m]
n.Symbol Ra
A rare, brilliant white, luminescent, highly radioactive metallic element found in very small amounts in uranium ores, having 13 isotopes with mass numbers between 213 and 230, of which radium 226 with a half-life of 1,622 years is the most common. It is used in cancer radiotherapy, as a neutron source for some research purposes, and as a constituent of luminescent paints. Atomic number 88; melting point 700=C; boiling point 1,737=C; valence 2.See table at element
语源
(1)Latin radius [ray]
(2)-ium
英汉船舶大词典
radium
n.镭
英汉电信大词典
radium
n.镭
英汉地质大词典
radium
n.镭
英汉纺织大词典
radium
n.镭,镭绸
英汉环境大词典
radium
n.镭
英汉海运大词典
radium
镭(Ra)
英汉进出口商品词汇大全
radium
镭
英汉经贸大词典
radium
n.镭Ra
英汉计算机大词典
radium
n.镭Ra
英汉机械大词典
radium
n.镭Ra,镭
英汉建筑大词典
radium
n.镭
英汉农牧林大词典
radium
n.镭
英汉能源大词典
radium
n.镭Ra
英汉水利大词典
radium
n.镭
英汉消防大词典
radium
镭
英汉心理学大词典
radium
镭
英汉冶金大词典
radium
n.镭
英汉医学大词典
radium
n.镭
英汉中医大词典
radium
n.镭