Hongkong-Zhuhai-Macao Bridge Zhuhai Branch Animation 港珠澳大桥珠海连接线工程动画

Опубликовано: 9 февр. 2017 г.From 04:29-12:06 can seen Gongbei tunnel use freezing method construction,Gongbei tunnel has 345 square metres cross-section,is the largest ground freezing tunnel in the world.
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