请输入您要查询的字词:
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
route guidance system, RGS
route horizontal control survey
route leveling
route of transmission
route optimization
route plan
router
router forensics analysis
routes of transmission
routes on South China Sea in the Han dynasty
route to chaos
route to the chaos
route vertical control survey
Routh
Routh equation
Routh-Hurwitz criterion
Routh-Hurwitz stability criterion
Routh-Hurwitz theorem
Routh limit
Routh method of reduction
Routh theorem
Routh–Hurwitz stability criterion
routine
routine activities theory
routine analysis
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。
Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号
更新时间:2026/7/17 4:58:48