Up and over.
Technically it's ancient technology. But now the two-millenia-old-principle of the Greek mathematician Archimedes has been deployed at gargantuan scale. The Three Gorges Dam, China's marvel on the Yangtze River, is one of the world's largest engineering projects -- the product of 37...
| 發表在: | National geographic. 231, 3 (2017 (Mr)). |
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| 主要作者: | |
| 格式: | Article |
| 語言: | English |
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