“钷”的概念、定义、翻译、参考文献-科学参考

单词	钷
释义	钷 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。 Chemistry ＞放射化学与辐射化学＞放射性元素化学＞释义 promethium钷
随便看	precautionary approach precautionary demand for money precautionary principle precautionary principle of biosafety assessment precautionary principle of EMF precaval vein precedance relation in dependency tree precedence precedence function precedence grammar precedence method precedence relation precedent anthologies precedent as reference in a trial preceding preceding limb preceding spot preceding sunspot Preceramic Period preceramic polymer precess precessing-disk model precession precessional constant precessional motion

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。