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【答案】应助回帖
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freefly2016: 金币+20, 翻译EPI+1 2016-04-12 08:39:54
这个永不者化学专业的就可以搞定：
①这些物质中，物质A、B和C为同系物。他们的结构中都含有物质A的结构。B比A多一个甲基，C 比A多两个甲基。
Among these compounds, A, B and C are homologues，all of which have A structure framework. Comparing with A, B has one more methyl while B has two more methyl groups in their structures, respectively.
Side note: 描述结构为什么用过去式呢？难道昨天是同系物，明天就不是了？
②随着碰撞能量的增加，m/z 100的峰增加一点，但并没有新的峰再出现。当碰撞能量达到40eV时，m/z 100的峰消失了。
With the increasing of collision energy, the peak abundance at m/z 100 increased slightly, with no extra peaks （or product ions）. However，the peak at m/z 100 disappeared when the collision energy was increased to up to 40 eV. |
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