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- ground navigation aid 地面导航系统
- A glove-based navigation aid for blind and visually impaired people wins awards for a team of Cambridge students. 专为盲人和视力受损人士设计的导航手套为几个剑桥大学的学生赢得了众多奖项。
- The Impact of Solar Winds on Navigation Aids. 太阳风对导航辅助设备的影响。
- Such navigation aid for the sea of information would be highly useful only in complex contexts such as global change. 这种信息之海的领航援助，只有在全球变迁这种复杂议题下才会非常有用。
- The Automatic Identification System(AIS) is a new kind of navigation aid and its installation has been mandatory by the IMO MSC 73 conference. 船舶自动识别系统(Automatic Identification System,简称AIS)是一种新型的船舶辅助导航设备,国际海事组织已通过AIS强制性安装议案。
- Web course developed by the platform can provide students with learning style, learning materials and navigation aid which fit their features and needs. 该平台开发的网络课程能提供学习者适合他们特征和需要的学习方式、学习内容和导航帮助。
- The Automatic Identification System(abbreviated as AIS)is a new navigation aid,which is tobe mandatory for the installment on ships by the MSC73 Resolution,IMO. 船舶自动识别系统(Automatic Identification System,简称 AIS)是一种新型的船舶辅助导航设备，IMO MSC73会议已通过 AIS 强制性安装议案。
- Methods: Precision, time requirements, and number of scout images for repositioning the fluoroscope, with and without navigation aid, were recorded on 20 test-rig and 3 phantom setups. 方法：应用导航技术和非导航技术重新定位检查器的准确度、需求时间和投射次数被记录在20个实验设备和3个模型装备上。
- Since 1980 when it was established, CASC has imported more than 500 commercial aircraft and wide range of ground support equipment, including communications, navigation aids, ATC systems, weather observation and forecast systems and special vehicles etc. 自一九八零年以来，先后进口了各种民用飞机500多架，以及大量的通信、导航、空中交通管制、气象测报、特种车辆等安全保障和机场配套设施。
- They are already beyond the need for more traditional navigation aids because they are so familiar with the product. 传统的导航助手已经不能满足其需求，因为他们对产品非常熟悉。
- Provides information about how to add menus and other navigation aids to your ASP.NET Web pages. 提供有关如何向ASP.;NET网页添加菜单和其他导航辅助工具的信息。
- 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。
- The following procedures describe how to add menus and other navigation aids to your ASP.NET Web pages. 下面的过程介绍如何向ASP.;NET网页添加菜单和其他导航辅助功能。
- 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。
- High Acres Airport - Location, operations, navigation aids, and runway information for this private airport. 易易工作室-各种在线工具，站长网志，以及多个应用项目。
- The fox went to ground under a rocky escarpment. 狐狸钻进了石崖下面的洞里。
- Navigation aid and signaling apparatus 助航标志与信号设备
- Navigation aid monitor system design research 航标监测系统的设计研究
- The ground was covered with ferns. 地面上长满了羊齿植物。
- Fixed Pulse Radar Navigation Aid 固定脉冲雷达导航设备
