, 2012 石墨烯（graphene）是一种由碳原子以sp2杂化轨道构成的六角型呈蜂巢晶格的单层片状结构的新材料。英国曼彻斯特大学物理学家安德烈·海姆和康斯坦丁·诺沃肖洛夫，因成功地在实验室中从石墨中分离出石墨烯，而共同获得2010年诺贝尔物理学奖。目前，它是世界上最薄却也是最坚硬的纳米材料。它几乎完全透明，导热系数高于碳纳米管和金刚石，而电阻率只有约10-6Ω·cm，比铜或银更低，为目前世上电阻率最小的材料。因其电阻率极低，电子迁移速度极快，因此被期待可用于发展出更薄、导电速度更快的新一代电子元件或晶体管。
刘楠
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Guangtongxin yanjiu, 1995 ＳＭＳ－６００ＷＳＭＳ－６００Ｗ宽带插分多路夏用器（以下简称ＳＭＳ－６００Ｗ）是一符合ＣＣＩＴＴＥＴＳＩ标准的ＯＬＴＭ接入系统．它与ＳＭＳ－１５０相似，现已开发完成，可用以替代常规的用于同步网中的Ｎ６０００系列数字ＭＵＸ或ＯＬＴＭ。该系统的主要特点是...
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