Chongqing Dongshuimen ko'prigi FRP ichi bo'sh yadroli plitalar bilan yangilanadi
Chongqing, Xitoy - Chongqing Dongshuimen ko'prigi, Yangtze daryosi bo'ylab Yuzhong va Nan'an tumanlarini bog'laydigan muhim bo'g'in, FRP (tolali polimer) ichi bo'sh yadroli plitalardan foydalangan holda shahar infratuzilmasi uchun zamonaviy yondashuvni ochib berdi ...
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