19岁大学生真人免费观看电视剧,小说极品岳母,日本伦理三级成人电影,久久爱福利电影,真实的与子乱刺激对白,波多野结高清无码中文dvd,神马三级伦理片,他最野了小说全文,聪明的妻子怎么面对老公外遇

Labor behind the world's tallest bridge in Guizhou

China Daily | Updated: 2025-05-01 09:26
Share
Share - WeChat
A photo shows the Huajiang Grand Canyon Bridge under construction in Guizhou province on Sept 11, 2024. LEI SHENG/FOR CHINA DAILYA

Faced with extremely heavy bridge segments and canyon winds that sometimes exceeded force 12 on the Beaufort scale, the construction team independently developed heavy-duty climbing scaffolding and a smart cable hoisting system based on positioning from the Beidou satellite, capable of lifting steel truss girders weighing up to 215 tons with millimeter precision.

The welding requirements for the bridge project are stringent. Welders must hold a national certification. To address porosity in welds caused by strong canyon winds, the construction team innovated a windproof welding technology.

|<< Previous 1 2 3 4 5 6 Next   >>|
Top
BACK TO THE TOP
English
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US