英语词汇“promethium”是什么意思，“promethium”的读音、用法及例句翻译-烛光网

词汇	promethium
释义	pro·me·thi·um AHD[prə-mēʹthē-əm] D.J.[prəˈmiːθiːəm]K.K.[prəˈmiθiəm]n.Symbol Pm （名词）符号 Pm A radioactive rare-earth element prepared by fission of uranium or by neutron bombardment of neodymium, having 14 isotopes with mass numbers ranging from 141 to 154 and used as a source of beta rays. Atomic number 61; melting point 1,168°C; boiling point 2,460°C; valence 3. See table at element 钜：放射性稀土元素，由铀分裂或钛的中子爆炸而成，有十四个拥有从141到154的质量数的同位素，用作β射线源。原子序数61；熔点1,168°C；沸点2,460°C；原子价为3 参见 element Etymology语源 From Prometheus 源自 Prometheus
随便看	behaviour behaviour behaviourism behead beheaded beheading beheads beheld beheld behemoth behemoth behemoths behen behest behests behind behind behindhand behinds behind-the-scenes behind–the–scenes behold behold beholden beholden

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