馮家杰先生和大家暢談手機網絡科技。
分享
科技世界 什麼是 3G、4G？有 5G 嗎？
Passengers use their smartphones to surf the Internet in a subway train in Hangzhou city, east Chinas Zhejiang province, China, 5 May 2014.
馮家杰先生和大家暢談手機網絡科技。
Published
Updated
Source: SBS
Share this with family and friends
