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Its main components include propane, butane and butylene.是什么意思？

Its main components include propane, butane and butylene.

主要成份是丙烷 、 丁烷、丁烯等.

相关词汇
its main components include propane butane and butylene

its

pron. (it的所有格形式)它的，厥；

main

adj. 主要的，最重要的，全力的；n. 最主要的部分，重点，主要管道，体力，[航海]公海；

components

n. （机器、设备等的）构成要素，零件，成分，成分( component的名词复数 )，[物理化学]组分，[数学]分量，（混合物的）组成部分；adj. 组成的，构成的；

include

vt. 包括，包含，计入，包住；

propane

--

butane

n. 丁烷；

and

conj. 和，与，而且，于是，然后，因此；

butylene

n. 丁烯；
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