[化] 不饱和烃
[医] 不饱和烃

unsaturated hydrocarbon的用法和样例：

例句

Abundant cutinite and exitinite of oil shale cause the volume of long-chain saturated hydrocarbon increases.油页岩中含有丰富的角质体和壳屑体，导致长链饱和烃增加。

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