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sltmac: 金币+1 2012-04-25 15:09:11
mas050518: 金币+12, 翻译EPI+1, ★★★很有帮助, 感谢 2012-04-25 17:17:25

We used the cheap 4-methylcinnamaldehyde as the primary material, through two-step reaction (brominated, halides by grafting), grafted two kinds of biological compatibility of dyes, obtaining the target—reactive dyes A, reactive dyes B ;
这一句里感觉没主语，我加了个We,然后后面的获得我改成了分词作状语形式
第二句建议用过去式把select 改为加ed 的形式后面的类推Dye, wash and We use reactive dye A and B respectly to wet bule gether and two kinds of protein silk .The product is determined its chroma ,chromatic value through the X-rite desktop spectrophotometer, and compared with the product dyed, washed, dried by parent dyes through the same process, test and verify the reactive dye 's fastness to washing after washing and drying in different time.
最后一句里改了下主语，同时把时间状语置后了

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