亚洲视频免费一区,国产欧美综合一区二区,亚洲国产观看,91精品啪在线观看国产91九色,日本又黄又粗暴的gif动态图含羞,麻豆国产一区二区在线观看,中文字幕在线二区

Global EditionASIA 中文雙語Fran?ais
China
Home / China / Innovation

Intelligent service systems used on Beijing subway

By Du Juan and Zhang Yu | chinadaily.com.cn | Updated: 2020-04-02 20:44
Share
Share - WeChat
Subway trains on Line 6 in Beijing have adopted a smart service system that includes inspection cameras and LED windows showing useful transport information and can detect whether passengers are wearing masks. [Photo provided to chinadaily.com.cn]
|<< Previous 1 2 3 4 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