I worry we may be heading for a future in which only a few people plot their own itinerary through no-land, while everyone else books a package tour.
我担心,未来只有一小部分人自己寻找穿过荒原的路;而其他人只是跟团旅行。
A gyrocompass is required to indicate the heading of a land, sea, or air vehicle.
陀螺被用来指示陆上的、海上的或空中的运动体的方向。
Based on interferometry measurement theory of satellite carrier phase, the technology of land vehicle heading determination through Beidou Bi-Satellite System was studied.
基于卫星载波相位干涉测量原理,研究了利用北斗双星系统确定车辆航向的相关技术。
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