中文字幕乱码播放-天天干天天操天天射-我想看毛片-色妞视频-男人j进女人p-国产片在线观看-99久久九九-黑丝美女被爆操-毛片网站在线播放-欧美乱淫视频-波多一区-欧美一级久久久-天堂资源站-97福利网-黄色成人影视-伊人www-丰满少妇一级片-女人解衣喂奶电影-国产一精品一aⅴ一免费-中国黄色a级片-黑人巨大精品欧美黑白配亚洲-国产精品亚州-黑人精品无码一区二区三区AV-欧美中文在线视频-国产女教师被内谢-色日本在线-伊人色爱-999视频在线播放-精品国产一区二区三区噜噜噜-亚洲自拍日韩

banner
Guiweng Qingshui River Bridge
2017-12-23 09:11:17

Qingshui River Bridge is located in the expressway from Guiyang of Guizhou province to Weng’an with a total length of 2171.4m. The main bridge is suspension bridge of single span simply supported steel truss stiffening girder with 1130m main span. The main bridge is over 500 meters high from the deepest canyon,and it is a suspension bridge whose span is the biggest and the most difficult in construction among similar bridges in Guizhou.


貴甕清水河大橋.jpg