2016年12月英语四级阅读长篇阅读练习(五)

2016-08-09 11:22:24来源：网络

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　　46.Nanoplatelet is the powder-or flake-type of graphene that has been used for some time to make conductors and that is being launched on the market.纳米片是粉末状或者薄片状的石墨烯，被用于制作导体已经有一段时间了，而且开始被推向市场。

　　47.To encourage industry to replace silicon with graphene.it is necessary for graphene to provide high property at an extremely low expense.为了让业界用石墨烯代替硅，就必须让石墨烯在造价极低的同时保持高性能。

　　48.While graphene flakes are roughly processed with bulk graphite，graphene sheets are carefully made on substrates like copper,germanium，or silicon carbide.石墨烯薄片是由块状石墨粗略加工而成的，而石墨烯薄膜则是在铜，锗或者碳化硅等基板上仔细加工而成的。

　　49.In the past ten years，graphene has become a hot topic among the scientific and technology groups.在过去的十年间，石墨烯已经成了科学技术界的热点话题。

　　50.Perforene won’t come into the market before it Can be manufactured at a very low cost.Perforene在能够以低成本大量生产之前是不会上市的。

　　51.Despite of a much younger age than silicon，great progress has been made in graphene;and with ever increasing interest，investment and research in graphene technology,it’s probable to manufacture cost-effective graphene ofhigh quA.ity.虽然出现得比硅要晚很多年，石墨烯仍取得了很大进展;而且随着石墨烯技术利益，投资及研究的日益增加，很有可能以低成本生产大量高质量的石墨烯。

　　52.Graphene has been attempted to be used for plenty of noticeable applications.石墨烯已经被尝试着用于许多引人注意的应用程序。

　　53.Yet it still needs to take ten years for graphene to be used in semiconductors，which lies at the heart of the technology.但是，将石墨烯用于半导体制造(技术的核心)仍需要十年的时间。

　　54.With today’s technology,it is still impossible to control material down at the atomic level.以今天的技术还无法将材料控制在原子层面。

　　55.Elias Towe pointed out that having no“band gap”，the dispensable feature of transistors，makes it more difficult to produce graphene transistors.艾利亚斯•陶威指出，由于缺少晶体管必备的“带隙”，使得制造石墨烯晶体管更加困难。

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