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Nuclear magnetic resonance techniques are used to determine the national aleutric acid preferential conformation. The results show that the dithionic hydroxyl radicals are in reciprocal cross bearing.

采用核磁共振谱法测定了国产紫胶桐酸,表明,其分子中连二羟基处于反交叉位。

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99%不为人知的故事

I was around this time that David Railton came across a temporary grave a few miles behind the front, marked by a cross bearing the name of a regiment, and the words " An unknown British soldier" .

大约就这个,David Railton 前线几英里后的个临墓地发现着十字架的坟墓,上面写着个团的名称和“位不知名的英国士兵”的字样。

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