Polymers may consist of long chains of unbranched or branched monomers or may be cross-linked networks of monomers in two or three dimensions.
聚合物可能包含由无支链的或有支链的单体组成的长链，也可能是单体连接的耳维或三维网状结构。
This complicated fluxion must be described with two dimensions or three dimensions.
这种复杂的流动状态需要用二维或三维来描述。
This complicated fluxion must be described with two dimensions or three dimensions.
这种复杂的流动状态需要用二维或三维来描述。
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