“protactinium”的概念、定义、翻译、参考文献-科学参考

单词	protactinium
释义	protactinium Encyclopedia 理学放射性元素释 protactinium镤天然放射性元素，元素符号Pa，原子序数91，原子量为231.03588，属周期系ⅢB族，锕系元素。 Physics protactinium=protoactinium镤91Pa｛化｝ Astronomy protactinium缩写：Pa。镤 Chemistry ＞放射化学与辐射化学＞放射性元素化学＞释义 protactinium镤
随便看	pre-stellar cloud pre-stellar evolution pre-stellar matter pre-stellar object Prestes Column Preston prestore prestrain prestratification prestratified prestress pre-stress cementing prestressed prestressed anchor prestressed anchorage prestressed concrete prestressed concrete bridge prestressed concrete cylinder pipe prestressed concrete structure prestressed jack prestressed steel bar binding machine prestressedsteel heading prestressed steel tensioning machine prestressed strand prestressed structure

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。