It can be divided into natural rubber and synthetic rubber according to the source of raw materials.

根据原材料的来源不同，它能分为天然橡胶和合成橡胶两类。

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It can be divided into natural rubber and synthetic rubber according to the source of raw materials.

根据原材料的来源不同，它能分为天然橡胶和合成橡胶两类。

youdao