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数理化与应用13：物质的第四态-等离子体(上.下）（1VCD）音像教材

商品编号：PCEO12085 出版社：北京科影音像出版社出版时间：2009

【内容简介】
物质的第四态－等离子体（上）：我们日常所见的物质都是以固体、液体、气体这三种形式存在的。那么是否存在着物质的第四种状态呢？有，这就是等离子体。本片介绍有关等离子的知识。
物质的第四态－等离子体（下）：作为物质第四态的等离子体具有其它三态所没有的奇特性质。等离子体的温度可以高达几千、几万度甚至更高。它还具有极强的化学活...

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数理化与应用14：追踪冷能.寻找失去的太阳.可燃冰（1VCD）音像教材

商品编号：PCEO12084 出版社：北京科影音像出版社出版时间：2009

【内容简介】
追踪冷能：从古至今，人类出于对温暖的想往和对寒冷的畏惧，一直在努力开发热能。而人类在经历了无数个冷热交替之后，发现冷也是一种能量。冷能产生于温差的变化，与太阳能和风能一样是一种清洁的能源，可以应用于能源、建筑、余热回收等各个领域。21世纪，冷能可望在国家能源结构中占有较大的比重。
寻找逝去的太阳：影片介绍了石油形成的...

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数理化与应用15：冷冻地层.低温世界.软黄金与试金石（1VCD）音像教材

商品编号：PCEO12083 出版社：北京科影音像出版社出版时间：2009

【内容简介】
冷冻地层：大地的封冻、解冻受气温控制，是大自然冷热能量转换的结果。人类目前还没有足够的能量把整个大地都冻上，但局部的人工冷冻早在1862年就用在了矿山立井的开挖上，到今天我们对地层冷冻最深的记录已达930米。现在冷冻技术应用最多的则是市政建设如地铁、隧道的工程施工。
低温世界：人们日常生活中接触到的温度一般在70℃——...

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数理化与应用16：低温核供热堆.轰击原子核的大炮（1VCD）音像教材

商品编号：PCEO12082 出版社：北京科影音像出版社出版时间：2009

【内容简介】
低温核供热堆：影片形象地介绍了1989年我国建造的世界上第一座低温核供热反应堆的工作原理、性能及它给人们带来的前所未有的经济、生态、环境效益，并预示不久的将来，我们都会得到核能带来的温暖。
轰击原子核的大炮——粒子加速器：构成世界万物最基本的东西究竟是什么？为了解决这个问题，科学家建造了粒子加速器——一个轰击原子核的...

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数理化与应用17：大自然的美丽分形（上.下）（1VCD）音像教材

商品编号：PCEO12081 出版社：北京科影音像出版社出版时间：2009

【内容简介】
大自然的美丽分形（上）：大自然中的许多物体具有复杂和不规则的特性，用传统几何很难进行精确描述。二十世纪八十年代兴起的分形几何提出了分数维数的概念，维数不仅仅可以是一维、二维、三维这样的整数维数，还可以是分数维数，它可以描述传统几何无法描述的许多不规则的复杂物体；分形几何具有的另一个特征就是在不同尺度下的自相似性，自相似性同样在自然...

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数理化与应用18：桥梁抗风（上.下）海洋生物与船舶涂料（1VCD）音像教材

商品编号：PCEO12080 出版社：北京科影音像出版社出版时间：2009

【内容简介】
桥梁抗风（上）：上万吨重的大桥为何会被风吹垮？五十多年前惨痛的一幕引发了科学家们对桥梁抗风的研究。今天，南京长江二桥即将成为中国最大的斜拉桥，那么它的抗风问题又是如何解决的呢？本片在揭示桥梁风毁原因的同时，讲述了南京二桥抗风实验的过程。
桥梁抗风（下）：大跨度桥梁在建造之前要进行抗风实验，除了对成桥以后的状态进行实验...

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追踪历史1（1VCD）音像教材

商品编号：PCEO12079 出版社：北京科影音像出版社出版时间：2009

【内容简介】
恐龙化石：两亿多年前出现的“禄丰龙”是恐龙的祖先。恐龙时代的中期，由于种种原因，“家谱”出现断代现象，我国四川省自贡地区出土的“蜀龙”弥补了恐龙进化中的空白。恐龙进入晚期阶段，家族更加兴旺，但是恐龙突然全部灭绝了，成了最大的科学之谜，而我国河南省西峡地区发现大批的恐龙蛋，给科学家提供了珍贵资料，它们也许能揭开恐龙灭绝之谜。

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追踪历史2（1VCD）音像教材

商品编号：PCEO12078 出版社：北京科影音像出版社出版时间：2009

【内容简介】
河姆渡访古：在浙江省河姆渡，出土了距今七千年前的古人类活动遗迹，有大量的稻谷和木制桨具。河姆渡为中华民族的文明史增添了新篇章。
红山文化——坛、庙、冢：红山文化是我国北方地区新石器时代的文化遗存，距今已有5000 多年的历史，主要内容是坛（祭坛）、庙（女神庙）、冢（积石冢），以及与其相关的女神塑像、玉器、陶器等等。<...

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追踪历史3（1VCD）音像教材

商品编号：PCEO12077 出版社：北京科影音像出版社出版时间：2009

【内容简介】
古剑：介绍虽然在地下埋了二千多年，出土后却依然光华夺目、寒气逼人的越王勾践的宝剑和夫差剑、秦剑等，反映了我国春秋战国时期冶金技术所达到的高度水平。
留驻秦人的色彩：1974年，陕西省临潼县的几位打井农民刨出了几样怪物，经过仔细辨认，那是一些残缺不全的陶俑。考古队随即开始了初步的挖掘，八千余件陶俑、四万余件兵器相继出土。...

市场价：￥45元商城价：￥40.5元

追踪历史4（1VCD）音像教材

商品编号：PCEO12076 出版社：北京科影音像出版社出版时间：2009

【内容简介】
苏颂与水运仪：影片集中介绍了宋朝宰相苏颂主持建造的古天文仪器水运仪象台的构造原理、使用性能及它在世界科学技术史上的特殊地位。
李四光与中国第四纪冰川：研究第四纪冰川对于认识地球发展，正确揭示地壳、气象和生物变化的规律有重要作用。我国卓越的科学家李四光在第四纪冰川问题上做出了独特的贡献。影片介绍了他关于这方面的理论与实践...

市场价：￥45元商城价：￥40.5元

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