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paul9979

金虫 (小有名气)

[求助] 麻烦英语高手帮忙翻译下,谢谢!

The membranes have been used for alcohol/water pervaporation. The membranes are highly selective for water and show selectivities >3100 for water using(90/10) ethanol/water feed systems. In permeation measurements , these membranes show no selectivities other than Knudsen for permanent gases. Unlike Knudsen diffusion, these membranes show increasing permeation with increasing temperature. This indicates the probability of small defects in the films around 10 Å. The defects shown by the gas permeation measurements indicate that cracks have formed in the membranes, possibly upon drying. It is believed that these are caused by the contraction of the zeolite NaA structure upon removal of water, which gives a 0.16% contraction in the dimensions of the unit cell.
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vivanslum

木虫 (正式写手)

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sltmac: 金币+1 2012-05-19 09:25:44
paul9979: 金币+10, 翻译EPI+1, ★★★很有帮助, 谢谢你!翻译的不错 2012-05-21 17:04:01
这些膜已被用于乙醇/水的渗透汽化。膜对水具有高度选择性,当给水系统为乙醇/水比例(90/10) 时,膜对水的选择性>3100 。在渗透量测量中,这些膜没表现出选择性,除 Knudsen对永久性气体具有选择性。与Knudsen扩散不同,随温度升高,膜的渗透量增加,这表明膜上可能存在10埃左右大小的破损。基于气体渗透量测量所显示的破损,表明膜上已经形成裂痕,这可能是在烘干后形成的。这些被认为是在除去水分时NaA型沸石的结构收缩造成的,其单位晶胞的尺寸收缩达0.16%。
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2楼2012-05-18 23:54:03
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bad_good

金虫 (初入文坛)

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sltmac: 金币+1 2012-05-19 09:25:47
paul9979: 金币+5, ★有帮助, 谢谢你,虽然没有翻译完,还是有参考价值,再次感谢! 2012-05-21 17:05:06
细胞膜参与醇/水渗透蒸发。细胞膜对水具有高度选择性,在乙醇/水为90/10的供应系统中细胞膜表现出对水大于3100的选择性。在渗透测量中,除了对永久性气体的努森作用外,这些细胞膜并未显示出选择性。与努森扩散不同的是,这些细胞膜的渗透能力随温度升高而升高。(就翻译到这,后面没看太明白啊)
3楼2012-05-19 00:18:31
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