“promethium”的概念、定义、翻译、参考文献-科学参考

单词	promethium
释义	promethium Encyclopedia 理学放射性元素释 promethium钷人工放射性元素，元素符号Pm，原子序数61，半衰期最长的同位素的质量数145.0，属周期系ⅢB族，镧系元素、稀土元素。由希腊神话中从天庭盗取火送到人间的英雄普罗米修斯（Prometheus）而命名。 Physics promethium钷61Pm Astronomy promethium缩写：Pm。鉕 Chemistry ＞放射化学与辐射化学＞放射性元素化学＞释义 promethium钷
随便看	half-superficies and half-interior half-symmetric resonator half-tangent half the amount of split Half the Sky half thickness half thickness; half-value layer (HVL) half-time half-time for isotope exchange half tone half-tone halftone halftone image halftone original half-trace half-trajectory half-turn half-value discharge time half-value discharging time half value layer half-value layer half-value layer (HVL) half-wave antenna half-wave dipole half-wave filter

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