2004/11/13 | 示踪元素[Tracer Element]
类别(℃〖化学〗) | 评论(0) | 阅读(19) | 发表于 21:31
A radioisotope used to determine the course of chemical reactions.
0

评论Comments

日志分类
首页[1408]
∑〖数学〗[349]
Ω〖物理〗[357]
¤〖天文〗[343]
℃〖化学〗[359]