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【求助】几句话请大家帮忙修改
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各位虫友： 文章中有几句话觉得写得不太好，请大家帮忙修改下。 小生在此谢过了! 1. Crystallization of copolymers becomes gradually difficult with increasing R. 聚合物的结晶随着R的增大逐渐变得困难。 2. In the past few decades, biodegradable polymers have attracted increasing interest both from material researchers and industrial workers. 3. In order to modify properties of PBS, extensive researches have been focused on the introduction of comonomers to alter its chemical structure. 为了对P进行改性，广泛的研究集中于引入共聚单体的来改变其化学结构的研究。 4. As expected, thermal stability and mechanical properties of copolymers can be enhanced to some extent by the introduction of aromatic units. 正如我们所期望的，通过芳香族单元的引入可以在一定的程度上使共聚物的热稳定性和力学性能得到提高。 |
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铁杆木虫 (正式写手)
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1. The difficulty of the copolymers crystallization increased with increasing radius. 2. have attracted attentions increasingly both from.. 3. In order to optimize the properties of PBS, many researchers focused on the modifications of chain structures by inducing comonomers. 4. As was expected, ..could be...去掉 to some extent |
2楼2010-03-31 11:22:21
3楼2010-03-31 13:15:52