请输入您要查询的字词:
单词
钐-钕定年
释义
钐-钕定年
Encyclopedia
理学
钐-钕定年
释
Sm-Nd dating
钐-钕定年
在Sm-Nd同位素封闭系统中,利用147Sm放出一个α粒子与能量衰变成143Nd,由衰变定律根据母体147Sm的减少量、放射成因143Nd*增加的量计算系统Sm-Nd年龄的方法。
随便看
Chesapeake Incident
Cheshi
Che Shu will Dance with Him:Che Shu Hui Tong Dance
Chess
chess
chess and cards
chessboard
chessboard method
chessboard problem
Chess Men
chest
chest-beating dance
chest discomfort
chest distress
Chester Alan Arthur
chestnut
chestnut myotis
chestnut silk
Chestnut soil
chestnut tube
chest of drawers argument
chest pain
chest percussion vibration
chest physiotherapy
chest sweating
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:2026/6/16 0:37:32