“polyisobutylene”的概念、定义、翻译、参考文献-科学参考

单词	polyisobutylene
释义	polyisobutylene Encyclopedia 工学聚异丁烯释 polyisobutylene聚异丁烯由异丁烯经正离子聚合制得的聚合物。是一种典型的饱和线型聚合物。分子链主体不含双键，无长支链存在，其分子量可从数百至数百万，其中没有不对称碳原子，并且结构单元以首-尾有序连接。
随便看	properly containing filter properly convex function properly convex subset properly differentiable function properly discontinuous action properly discontinuous group properly divergent sequence properly divergent series properly elliptic properly elliptical properly elliptical operator properly elliptic equation properly equivalent form properly hyperbolic properly infinite algebra properly infinite projection properly nilpotent element properly posed problem properly primitive form properly triangular matrix proper maintenance method of photographic lens proper map proper mapping proper mass proper modification

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