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中国争气桥:南京长江大桥

  • 2026-04-02 08:16:43
中国争气桥:南京长江大桥

💪 中国争气桥：南京长江大桥

- 地位：长江上第一座由中国自行设计、完全自主建造的公铁两用桥，1968年通车，被誉为“争气桥”。

- 结构：双层钢桁梁桥，上层公路桥长4589米，下层铁路桥长6772米，曾是世界最长的公铁两用桥。

- 意义：打破了外国对大型桥梁技术的垄断，是中国自力更生的象征，周恩来总理曾称其为“新中国两大奇迹”之一。

- 背景：在苏联专家撤走、技术封锁的背景下，中国工程师自主攻克深水基础、钢梁架设等难题，用国产钢材完成建设，向世界证明了中国的建桥能力。#南京长江大桥 #中国争气桥 #长江上的第一座桥 #双层钢桁梁桥 #历史建筑之美 #争气桥#南京长江大桥历史

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  1. CONNECT:[ UseTime:0.000456s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000822s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000302s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000256s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000485s ]
  6. SELECT * FROM `set` [ RunTime:0.000198s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000498s ]
  8. SELECT * FROM `article` WHERE `id` = 505575 LIMIT 1 [ RunTime:0.000895s ]
  9. UPDATE `article` SET `lasttime` = 1775124457 WHERE `id` = 505575 [ RunTime:0.016230s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000656s ]
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