Group IV: Polyalphaolefins (PAO's) are made by combining 2 to more decene molecules into an oligomer, a short-chain-length polymer.
聚（包）的是
结
2更癸分子成低聚
，短长链聚。
Group IV: Polyalphaolefins (PAO's) are made by combining 2 to more decene molecules into an oligomer, a short-chain-length polymer.
聚（包）的是结2更癸分子成低聚，短长链聚。
明：以上例
、词性分类
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