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visual navigational aids 视觉航标
Not having proper navigational aids the pilot had been unaware of the changing conditions and had flown the plane right into the eye of the tropical storm. 由于没有适当的导航援助，飞行员不了解周围气候的变化情况，将飞机直接飞入了热带飓风眼内。
"The focus now is on reinstalling navigational aids that were destroyed or carried away during the hurricane," Metz said. “现在的焦点是重新设置航行辅助设施，原先的设施被飓风毁坏或刮走了，”梅兹说。
The Impact of Solar Winds on Navigation Aids. 太阳风对导航辅助设备的影响。
The yacht is fitted with a comprehensive range of navigational aids, including radar, chart plotter, GPS, depth sounder, VHF radio, satphone, etc. 此船配有全面的航仪系统，包含雷达，海图仪，GPS，测深仪，测风仪，卫星电话等。
Not having proper navigational aids, the pilot had been unaware of the changing conditions and had flown the plane right into the eye of the tropical storm. 由于没有适当的导航支援,飞行员不了解周围气候的变化情况,将飞机直接飞入热带台风眼内。
The navigational aid the pilot was following was valid, but not for the landing procedure at Cali. 飞行员遵守的指示是没有错的，只不过这个指示不是用来在卡利降落而已。
It is impossible to navigate safely without these navigational aids. 如果没有这些助航设备，安全航行是不可能的。
Negligence or other wrongful acts in the exercise of the functions of departments responsible for the maintenance of beacons or other navigational aids. 负责灯塔或者其他助航设备的主管部门在执行职责时的疏忽或者其他过失行为。
It shall be forbidden to damage navigation aids or navigational facilities. 禁止损坏助航标志和导航设施。
In conjunction with the practical piloting, the maneuvering principals of berthing a very large container vessel in dense fog with navigational aids and tugs are discussed and analyzed. 结合引航工作的实践,阐述了在助航仪器和拖船的协助下雾中引领超大型船舶进港靠泊的操纵要领和体会。
Most web sites employ some form of visual navigation to help users move around the site easily, and find the information and Web pages they require. 大多数web站点采用可视化导航的某种形式来帮助用户轻松地浏览站点,以及查找他们所需的信息和Web页。
Primary school teachers use a lot of visual aids. 小学教师使用大量的视觉教具。
Again, most breadcrumbs provide not only a navigational aid, but a navigational control as well: They not only show where in the data structure a visitor is, but they give him tools to move to different nodes in the structure in the form of links. 而且大多数层级不仅提供了导航帮助，也提供了导航控件。它们不仅显示用户处于数据结构的什么位置，对于这种链接形式的结构，它们也为用户提供了移动到不同节点的工具。
In view of actual demand of circular inspection of substation equipments, a visual navigation method based on trajectory guidance for monocular patrol robot is presented. 针对变电站巡检工作的实际需求，介绍了一种基于轨线引导的巡检机器人单目视觉导航方法。
Any lights in the vicinity of the navigation aids or navigational lanes that jeopardize navigation safety shall be properly screened. 航标和航道附近有碍航行安全的灯光，应当妥善遮蔽。
To help passengers distinguish between different sections of the vast space, skylights cast different shades of yellow and red light across walls -- a subtle but innovative navigational aid. 为了帮助旅客区分不同的区域，机场的天窗将会越过墙面投射出不同阴影的黄色与红色灯光。
The same is true of software, and giving users the ability to decorate their personal applications is both fun and useful as a navigational aide. 软件也是这样，为用户提供个性化装饰能力，既有趣，又可以作为有用的导航助手。
Having synthesized the advanced technology of navigation in the world and its own characteristics of the lunar rover, we adopted visual navigation systems as lunar-rover's main work modes. 综合国际上导航的先进技术以及月球车的自身特点,本文采用了基于卡尔曼滤波的视觉导航系统作为主要的工作模式。