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跨海大桥的桥墩在深海如何建造？港珠澳大桥的建成，难度有多大？
如今中国已经成功建成了港珠澳大桥，并且还在建设深中通道，这也令人感到疑惑，那就是跨海大桥的桥墩在深海中如何建造？3大难点曝光，对此就连老外也感慨：中国太厉害了。
思远防务君1978/2388
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