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

[七国语言]英汉地理大词典

radium

[七国语言]英汉电子工程大词典

radium

[七国语言]英汉化学大词典

radium

[七国语言]英汉机械大词典

radium

[七国语言]英汉矿业大词典

radium

[七国语言]英汉物理大词典

radium

[七国语言]英汉冶金大词典

radium

[七国语言]英汉原子能大词典

radium

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

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

英汉心理学大词典

radium

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

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