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chubin555

金虫 (小有名气)

[求助] 专业英语考试题,帮帮忙在线等 已有1人参与

4. Diffusivity of chromate was taken from the literature. To test the effect of suspended solids on the rate of diffusion controlled corrosion of the impeller, porcelain particles were used. Particle size ranged from 0.3 to 0.7 mm while particle concentration ranged from 1% to 3% by volume. In order to test the effect of drag reducing polymers on the rate of diffusion controlled corrosion of the impeller, polyethylene oxide (polyox WSR-301) a product of Union Carbide was used in the form of suspension at concentrations of 200, 200, 400 and 500 ppm. The solid polymer powder has a density of
1.15±1.26 g/cm3, particle size ranged from less than 38 mm to larger than 500 mm. The polymer was used as received and no attempt was made to separate different sizes. The chemical stability of the polymer in acidified chromate was tested in separate experiments by adding polyox to acidified chromate solution (blank) for 1 h after which chromate concentration was determined, no change in chromate concentration was found to take place, i.e polyox is chemically stable in the solutions used in the present study. Rheological measurements showed that all polymer containing solutions were Newtonian; polymer addition in the form of solid particles to the blank solution was found to have a negligible effect on the physical properties of the solutions. Table 1 shows the physical properties of the solutions.(20points)


Ⅱ. Translate the following paragraphs into English:
1. 从现代化工和高新技术发展的需求出发, 论述了化工分离技术的重要性、多样性和复杂性。分析了化工分离技术在新世纪所面临的新的机遇和挑战。并对当代化工分离技术的发展特点和我们的对策进行了探讨。(10points)

[ Last edited by chubin555 on 2014-1-8 at 20:33 ]
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befair

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hanches: 金币+2, 感谢应助,BB奖励~~~ 2014-01-10 19:21:28
chubin555: 金币+30, ★★★★★最佳答案 2014-01-10 22:22:20
4. 铬酸盐的扩散率取自文献。为了检验悬浮物对于叶轮受扩散控制的腐蚀率的影响,使用了瓷粒。它们的粒度从0.3 到0.7mm,同时其体积浓度在1%到3%之间。为检验减阻聚合物对于叶轮受扩散控制的腐蚀率的影响,使用了联合碳化物公司的一款产品聚氧化乙烯(聚氧化乙烯WSR-301)在浓度200, 400 及 500 ppm下作为悬浮液。这一固态聚合物粉体的密度是1.15±1.26 g/cm3,粒度在38mm以下或者500mm以上。聚合物是按收到的原有状态使用的,并没有尝试分离不同的粒度。该聚合物的在酸化的铬酸盐中的化学稳定性是通过另外的实验检验的。 它是通过在一小时内加入聚氧化乙烯到酸化的铬酸盐溶液中(空白),然后确定铬酸盐的浓度。因为没有发现该浓度有任何变化, 也就是说聚氧化乙烯在本课题用的溶液中有化学稳定性。 流变学测试结果显示所有含有溶液的聚合物都是牛顿性的;向该空白溶液内加入固态粒子形式的聚合物对该溶液的物理性能的影响可以忽略不计。 表1展示了溶液的物理性能。

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Befairorbeaware
4楼2014-01-09 21:46:00
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befair

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chubin555: 金币+20, ★★★★★最佳答案 2014-01-09 12:47:15
1. Starting with the demands from development of modern chemical engineering and high tech, the importance, diversity and complexity of chemical separation technology are discussed. New opportunities and challenges faced by chemical separation technology in the new century are analyzed.  Developmental characteristics of current chemical separation technology and our strategies are explored.
因时间有限,先把汉译英贴上,如果第一段需要的是英译汉,请说明下
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Befairorbeaware
2楼2014-01-09 11:44:51
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chubin555

金虫 (小有名气)

引用回帖:
2楼: Originally posted by befair at 2014-01-09 11:44:51
1. Starting with the demands from development of modern chemical engineering and high tech, the importance, diversity and complexity of chemical separation technology are discussed. New opportunities ...

第一段是英译汉,可能有原文文献作参考,文献在这里http://pan.baidu.com/s/1sjq9QgP
3楼2014-01-09 12:46:14
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