The term is also used interchangeably with “nucleotide” although the latter is composed of a five-carbon sugar joined to a phosphate group and one of the bases.

它还与核苷酸互换使用，尽管后者是由一个五碳糖、磷酸和一个碱基组成。

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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。

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SGL Carbon Group is one of the most famous companies producing large two carbon fibers.

SGL炭集团公司是世界上生产大丝碳纤维最有名的公司之一。

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Methylation, the addition to a base of a group of three hydrogens and a carbon atom, is one way in which genes are regulated.

ECONOMIST: Nanopores may lead the way to a new generation of sequencing