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求助，英文文献中的一句话翻译
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A distance of approximately five carbon atoms,corresponding to approximately 6.3ai;,beteween a hydrophobic part and a hydrogen-bond-accepting oxygen atom as well as the absence of steric bulk in the vicinity of the alkoxy atom were found to be important requirements for a pear-type odor. 实在搞不懂什么意思，大家帮帮忙啊！ [ Last edited by xhy9883 on 2009-8-3 at 13:25 ] |
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