alkyl group

例句：

1. 1. The alkylene group is responsible for the chemical properties of the compound.
   烷基团负责化合物的化学性质。
2. 2.The alkene group undergoes a rearrangement reaction when exposed to heat.
   当暴露于热时，烯烃基团会发生重排反应。
3. 3. The alkane group has a high boiling point and low volatility.
   烷基团具有高沸点和低挥发性。