Any type of solid or semi solid organic material of natural or synthetic origin, generally of high molecular weight with no defined melting point. Most resins are polymers.

一类固体或半固体的天然的或合成的有机材料，一般为无清晰熔点的高分子量材料，多数树脂为聚合物。

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Any type of solid or semi solid organic material of natural or synthetic origin, generally of high molecular weight with no defined melting point. Most resins are polymers.

一类固体或半固体的天然的或合成的有机材料，一般为无清晰熔点的高分子量材料，多数树脂为聚合物。

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