Infrared spectroscopy shows that aromatic group is grafted onto the molecular chain of CPP.
红外谱图表明，在原来的CPP分子链上接上了芳环基团。
His group has found hundreds of genes that encode enzymes which produce flavourings and aromatic compounds.
他的团队还揭秘了几百种酶的基因，正是这些酶的基因控制了造成浓郁口味和芬芳气味的化合物。
The group is requesting that the FDA enact a rule that sets a limit on the amount of polycyclic aromatic hydrocarbons deemed safe for pregnant women and young children.
该机构正在要求FDA就多环芳烃对怀孕妇女和儿童无害的最低安全含量做出规定。
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