航图是专门用于导航的一种地图.Charts are a map adapted specially for navigation.本文提出了一种用于车辆导航的地图匹配算法.An improvement of map matching method for vehicle navigation system is presented.星间测距是重力测量卫星和卫星自主导航的关键技术.Inter - satellite ranging is ...
The zoo keeper is feeding the animals.动物园饲养人在喂动物.Set includes animals, zoo keeper, and large building bricks.套装中包括动物, 动物园管理员, 大积木.The zoo keeper simply gave the hawk a snake.动物园管理员给老鹰一条蛇....
They will concentrate on teaching the basics of reading, writing and arithmetic.他们将集中教授阅读、写作和算术基础知识。They should concentrate on rejuvenating the existing vegetation, like grass and shrubs.他们应该侧重于修整现有的绿化植被，比如草和灌木。The group...
他参与了石油、锌和铅的勘探。He was involved in oil, zinc and lead prospecting.黄铜是铜锌合金。Brass is an alloy of copper and zinc.铜与锌熔合成黄铜the fusion of copper and zinc to produce brass...