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关注：1
2013-05-23 12:21
求翻译：analogues were designed to introduce methyl groups ortho to the 4′-hydroxyl group. Methyl groups were also introduced at the 4-position para to the 4′-hydroxyl group.是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
analogues were designed to introduce methyl groups ortho to the 4′-hydroxyl group. Methyl groups were also introduced at the 4-position para to the 4′-hydroxyl group.
问题补充： |
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