As a result, n-butylamine as chain-extension agent decreases the inter action of molecular and increases the elongation of PU to 1400%.
结果表明，以正丁胺为扩链剂，可以减小聚氨酯分子间的作用力，提高分子的柔顺性，其断裂伸长率可达1400％以上；
Objective: To explore the protective effect of the Phyllanthus Urinaria (PU) extract on the N-cadherin expression in the testicular tissues disrupted by nitrogen mustard (HN2) in vivo.
目的：研究叶下珠(PU)提取物对盐酸氮芥(HN2)损伤睾丸组织N -钙粘蛋白表达的保护作用。
Objective: To explore the protective effect of the Phyllanthus Urinaria (PU) extract on the N-cadherin expression in the testicular tissues disrupted by nitrogen mustard (HN2) in vivo.
目的：研究叶下珠(PU)提取物对盐酸氮芥(HN2)损伤睾丸组织N -钙粘蛋白表达的保护作用。
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