木箱包装，内装5卷，每卷用分子化合物塑料薄膜及中性纸包裹，箱外铁带系缚。
Packed in Wooden Case with 5 Reels Inside and Every Reel was Wrapped with...
除含有高能量外，长链碳氢化合物也适合构建更复杂的分子，如塑料和药品。
Besides having a high energy density, the long chains of hydrocarbons are also good building blocks for constructing more complex molecules, such as plastics and pharmaceutical drugs.
塑料高分子的结构基本有两种类型：第一种是线型结构，具有这种结构的高分子化合物称为线型高分子化合物；
The structure of plastic polymers, there are two basic types: the first is linear structure, with the structure of the polymer is called linear polymers;
塑料高分子的结构基本有两种类型：第一种是线型结构，具有这种结构的高分子化合物称为线型高分子化合物；
The structure of plastic polymers, there are two basic types: the first is linear structure, with the structure of the polymer is called linear polymers;
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