As satellite navigation AIDS became widely used on vessels in the past few decades, many officers have neglected the traditional practice of celestial fixing.
近十几年来，自卫星导航仪较为普遍地被各类船舶装备和使用后，不少船舶驾驶员已置天文定位于不顾之境地。
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.
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。
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