vs.

    radium 对比 iridescent
    分析 词典对比 组词对比
    (1).中国译典 radium iridescent
    n.
    ①[U]【化】镭[符号 Ra];
    图典解说
    Extremely radioactive metal present in very low quantities in uranium ore; it is used mainly in medi...
    扩展解释:n. 【机械】
    镭Ra,镭
    a.
    ①虹彩的;
    扩展解释:adj.
    虹彩色的,现晕光的,闪光的
    N/A
    a.1. 彩虹色的;【气】虹彩的,2. 灿烂光辉的
    (2).维基词典 radium iridescent
    a radioactive metallic chemical element (symbol Ra) with an atomic number of 88.
    Producing a display of lustrous, rainbow-like colors; prismatic.
    Brilliant, lustrous, or colorful.
    (3).牛津词典 radium iridescent
    the chemical element of atomic number 88, a rare radioactive metal of the alkaline earth series. It was formerly used as a source of radiation for radiotherapy.
    (4).韦伯斯特词典 radium iridescent
    An intensely radioactive metallic element found (combined) in minute quantities in pitchblende, and various other uranium minerals. Symbol, Ra; atomic weight, 226.4. Radium was discovered by M. and Mme. Curie, of Paris, who in 1902 separated compounds of it by a tedious process from pitchblende. Its compounds color flames carmine and give a characteristic spectrum. It is divalent, resembling barium chemically. The main isotope of radium found in pitchblende, radium-226, has a half-life of 1620 years, decaying first by alpha emission to radon.
    Having colors like the rainbow; exhibiting a play of changeable colors; nacreous; prismatic; as, iridescent glass. See iridescence.
    简典