单词methyl group
un.: 甲基
甲基
Assume the geometry of the eclipsed form to be that given by rigidly rotating one methyl group with respect to the other.
假定重叠式的几何形是由一个甲基相对另一个甲基做刚体转动而得。
Conclusion Introducing the methyl group or a low alkyl group resulting in the high selectivity and increase of its activity.
结论甲基或低级烷基的引入导致了高选择性，使其活性增大。
Much is known about the "fifth base, " 5-methylcytosine, which arises when a chemical tag or methyl group is tacked onto a cytosine.
此前，科学家们已对第5种碱基有所了解——当一个化学标签或甲基被固定到一个胞嘧啶上时，第5种碱基就会出现。
The team looked at methylation, in which a methyl group is placed onto cytosine in DNA sequences.
工作小组关注甲基化作用，是指一个甲基群被放在DNA序列的胞嘧啶上面。
A methyl group is a basic unit in organic chemistry: one carbon atom attached to three hydrogen atoms.
甲基是有机化学的基本单位：一个碳原子连接三个氢原子。
The methyl group (CH3) attached to the methionine sulfur atom in SAM is chemically reactive.
甲基基团（CH3）附着在SAM中蛋氨酸硫原子具有化学反应性。
and R represents a hydrogen atom, a methyl group, a fluorine atom or a trifluoromethyl group.
且R表示氢原子、甲基、氟原子或三氟甲基。