聚合物：类似塑胶的人造或天然物体。由许多简单而属于同一种物质的分子，通过化学结合而形成，并具有较高的相对分了质量。
Polymer: Natural or synthetic plastic-like substances having molecule in a high relative molecular mass formed by the chemical linking of many simple molecules, of the same substance.
分子量：物质的分子质量，依据的事实是1莫耳的碳- 12的质量是12克。
Molecular weight: Mass of a molecule of a substance, Based on 12 as the atomic weight of carbon-12.
不管什么物质，只要知道其分子式，就能计算出与分子式相应的质量。
For any substances whose formula is known, a mass corresponding to the formula can be computed.
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