1、Progress in Global Positioning System (GPS) Modernization of U.S.
美國全球定位系統(tǒng)GPS現(xiàn)代化進(jìn)展

2、Serial_cs can also emulate serial ports over Global Positioning System PCMCIA and CF CARDS.
serial_cs也可以通過全球定位系統(tǒng)(GPS)PCMCIA和cf卡模擬串行端口。

3、Did you know you can use the global positioning system to find a difficult address?
你知道你可以用全球定位系統(tǒng)來找一個(gè)難找的地址嗎？

4、Global positioning system and discussion on its use(3)——application of GPS
全球定位系統(tǒng)及其應(yīng)用綜述(三)——GPS的應(yīng)用