国产热热热精品,亚洲视频久久】日韩,三级婷婷在线久久,99人妻精品视频,精品九热人人肉肉在线,AV东京热一区二区,91po在线视频观看,久久激情宗合,青青草黄色手机视频

High-tech devices make holiday travel more comfortable

By Wang Danning and Chen Ziyan | chinadaily.com.cn | Updated: 2024-02-05 17:05
Share
Share - WeChat

4. Unmanned boat

Workers carry out preparation work in Chengdu, Southwest China's Sichuan province, on Jan 27, 2024. [Photo/Xinhua]

Unmanned boats have been used for bridge inspection along the Chengdu-Chongqing intercity railway. Workers can measure the cross-section of riverbed in upstream and downstream areas with a remote control, and collect accurate and comprehensive data, thus offering a scientific basis for bridge maintenance.

A worker operates an unmanned boat in Chengdu, Southwest China's Sichuan province, on Jan 27, 2024. [Photo/Xinhua]
|<< Previous 1 2 3 4 5 6 7 Next   >>|
Top
BACK TO THE TOP
English
Copyright 1994 - . 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
若羌县| 安仁县| 乌苏市| 太原市| 体育| 岚皋县| 剑阁县| 惠州市| 延津县| 太仓市| 博客| 喜德县| 鄄城县| 昔阳县| 井研县| 鹤壁市| 密云县| 黑水县| 鄂尔多斯市| 丰城市| 道真| 汨罗市| 杭锦后旗| 西和县| 太湖县| 永胜县| 徐州市| 清远市| 景宁| 大余县| 会泽县| 阳高县| 邵阳市| 奎屯市| 昌图县| 沈丘县| 延川县| 萝北县| 光山县| 米林县| 彰化县|