男友太凶猛1v1高h,大地资源在线资源免费观看 ,人妻少妇精品视频二区,极度sm残忍bdsm变态

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
主站蜘蛛池模板: 根河市| 林口县| 卢氏县| 石首市| 苏尼特左旗| 宣汉县| 新余市| 怀柔区| 淮北市| 江达县| 门头沟区| 方城县| 榕江县| 吴桥县| 商水县| 庄浪县| 建瓯市| 清新县| 垣曲县| 丽水市| 南昌县| 利津县| 剑河县| 临澧县| 巴彦县| 方正县| 迁安市| 伊宁市| 嘉义县| 渭源县| 迭部县| 元谋县| 荔浦县| 修武县| 丰城市| 张家港市| 萍乡市| 兰坪| 横山县| 澄迈县| 茂名市|