单词 | global positioning system |
释义 | global positioning systemWord forms: plural global positioning systems countable noun A global positioning system is a system that uses signals from satellites to find out the position of an object. The abbreviation GPS is also used. global positioning system in British Englishnoun a system of earth-orbiting satellites, transmitting signals continuously towards the earth, that enables the position of a receiving device on or near the earth's surface to be accurately estimated from the difference in arrival times of the signals Abbreviation: GPS |
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