一个例子是流行的TomTom公司卫星导航设备系列。
An example is the popular TomTom line of satellite navigation devices.
在民航业，美国方面正派人到中国参观如何应用精确的卫星导航设备，并学习如何在恶劣天气和极端复杂地理条件下使用这些设备。
In aviation, showing how far China has come, U. S. regulators now visit the country to see applications of sophisticated satellite-based navigation aids and learn how the U.
完成过程：哈里森先生使用卫星导航设备，先引导气球到达距离地球表面22英里的高空，然后在相机通过降落伞返回地面时，恢复相机的照相功能。
Achievement: Mr Harrison guided the balloon to a height of 22 miles above the earth's surface and was able to recover the camera as it parachuted back down to earth using a sat-nav device.
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