新托福阅读备考背景知识总结，托福阅读考试想要取得好的成绩，需要我们多了解一些背景知识来充实自己的英语能力，为了帮助大家更好地备考托福，今天小编为大家整理了相关的内容，希望对大家的托福备考会有参考作用。
新托福阅读备考背景知识总结
polymer gels一种聚合凝胶
The following information was part of our display for the SET96 and SET98 Scientific Power to the People Exhibition, The Galleries, Bristol, 20th and 21st March 1998.
以下信息是我们展示SET 96和SET 98科学力量给人民的展览的一部分，1998年3月20日和21日，布里斯托尔美术馆。
A POLYMER is a very long molecule rather like a very long piece of string.
聚合物是一个很长的分子，就像一根很长的绳子。
The borax joins two molecules together to make a large network - rather like flexible scaffolding. This is cross-linking.
硼砂将两个分子连接在一起，形成一个很大的网络-就像柔性脚手架。这是交联。
This turns the fluid dissolved polymer into a GEL.
这就把溶解的聚合物变成了凝胶。
In oil wells water is pushed down to push oil up. If this breaks through to the production well bore, the well will just produce water. A solution is to block the rock pores with polymer gel to make the well produce oil again. These gels can be made from naturally occurring sugar-based polymers such as Guar and they can be cross-linked with Cobalt or Chromium.
在油井里，水被往下推，把油往上推。如果这一现象突破生产井眼，这口井只会产生水。解决方法之一是用聚合物凝胶堵塞岩石孔隙，使油井再次采油。这些凝胶可以由天然的糖基聚合物如瓜尔制成，也可以与钴或铬交联。
Other everyday examples of polymer gels are to be found in non-drip emulsion paints, foods, car tires and agrochemicals.
其他的聚合物凝胶的日常例子是在非滴水乳胶漆，食品，汽车轮胎和农用化学品。
The polymer that we are using is POLYVINYL ALCOHOL and we are joining the strands together with BORAX. This gel, when colored, is sold in toyshops as SLIME.
我们使用的聚合物是聚乙烯醇，我们将这些链与硼砂连接在一起。这种凝胶着色后，会在玩具商店里以黏液的形式出售。
以上就是小编为大家介绍的新托福阅读备考背景知识总结的相关内容了，想要了解更多资讯大家可以咨询朗阁教育官网，相信一定会为各位烤鸭答疑解惑。最后，小编预祝大家可以尽早考过托福考试，实现自己的目标。
