butylene

例句：

1. 1. Butylene is a typeof olefin that is used inthe production of polyester fibers.
   丁二烯是一种用于生产聚酯纤维的烯烃。
2. 2. Butylene is also used asa solvent for various organic compounds.
   丁二烯还被用作各种有机化合物的溶剂。
3. 3.The chemical industry uses butylene toproduce a variety of chemicals and products.
   化工行业使用丁二烯来生产各种化学品和产品。