教育政策應該是依照這個來修改的
Bluetooth - Wikipedia, the free encyclopedia 7年前、7年後 Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM band from 2.4 to 2.485 GHz[3]) from fixed and mobile devices, and building personal area networks (PANs). Invented by t...
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