亚洲色怡人综合网站,国产性夜夜春夜夜爽,久久97AV综合,国产色视频一区二区三区

US EUROPE AFRICA ASIA 中文
China / China

Speical wheelchair helps the elderly climb stairs

(chinadaily.com.cn) Updated: 2012-07-23 13:57
Speical wheelchair helps the elderly climb stairs

A researcher walks past the stair-climbing wheelchair system in a building in Hangzhou, Zhejiang province, July 22, 2012. The special wheelchair, made by researchers from Zhejiang University City College, is designed to help the elder people climb stairs in residential buildings that are not equipped with elevators. The cost for the whole system is between 10,000 to 20,000 yuan. ($1,565 – $3,130). [Photo/Xinhua]

Speical wheelchair helps the elderly climb stairs

A researcher demonstrates how to use the stair-climbing wheelchair system in a building in Hangzhou, Zhejiang province, July 22, 2012. [Photo/Xinhua]

Previous Page 1 2 Next Page

Highlights
Hot Topics

...