809| 15
|
天津城的变迁 |
评分 | ||
点评
海门大桥不是闸,是提升式开启桥,走大船时桥面提升(定时),平时桥面走車,小船桥下自由往来!
| |
点评
58年修建的海河防潮闸是海河的入海口,防止海水倒灌,如迂洪涝災害,提闸泄洪!
| |
| ||
点评
有战友都会有体会。战友情深哪!
| ||
小黑屋|手机版|Archiver|- ( ICP12013697-2 ) 11010802026271
GMT+8, 2024-11-6 07:56 , Processed in 0.064792 second(s), 13 queries , Gzip On, File On.
Powered by Discuz! X3.3
© 2001-2017 Comsenz Inc.