... 过渡元素;副族;subgroup;d区元素;d-block elements;transitio…… 主族;main group 主族;main group ...
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Main group pallasites 石铁陨石主群
Second main-group elements 第ⅡA族元素
MAIN GROUP METAL CHEMISTRY 主族金属化学
main group element control 主组元控制
main-group 主族
MG Main Group 主要用户组
At the same time,they agreed to make the G20 the main group the "premier forum" to guide international economic cooperation.
VOA: special.2009.10.02
If there's a group, responsibility to help decreases and this is captured in different ways but the main idea is we all think someone else will help so we don't. There's a diffusion.
如果是一群人,帮助的责任就会分散变小,这体现在多个方面,但最主要的想法就是我们都认为别人会帮助,所以我们就不帮助了,责任被分散了。
The leaders agreed to make the G20 the main group for their international economic cooperation, instead of the G8.
VOA: special.2009.09.26
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