交错链 [
jiāo cuò liàn]
alternating chain
- 标准橡皮筋由交错连接的长链聚合物制成,能拉伸至原先长度的几倍,释放后可缩回原型。
Standard rubber bands, which can stretch up to several hundred percent then snap back into shape, are made from long chains of cross-linked polymers.
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