英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：


请选择你想看的字典辞典：
单词字典翻译
3900查看　3900　在百度字典中的解释百度英翻中〔查看〕
3900查看　3900　在Google字典中的解释Google英翻中〔查看〕
3900查看　3900　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Home | GPS. gov
    The Global Positioning System (GPS) is a U S -owned utility that provides users with positioning, navigation, and timing (PNT) services The Global Positioning System (GPS) is an essential element of a global information infrastructure The free, open, and dependable nature of GPS has led to the development of hundreds of applications affecting every aspect of modern life
  • GPS | GPS. gov
    The Global Positioning System (GPS) is a U S -owned utility that provides users with positioning, navigation, and timing (PNT) services This system consists of three segments: the space segment, the control segment, and the user segment The U S Space Force develops, maintains, and operates the space and control segments The space segment consists of a nominal constellation of 24 operating
  • GPS Performance | GPS. gov
    The assertions evaluated include those of accuracy, integrity, continuity, and availability of the GPS signal-in-space (SIS) along with the assertions on accuracy of positioning and time transfer 2022 GPS Performance Analysis The GPS Accuracy page provides more information about real-world GPS performance
  • Systems | GPS. gov
    GPS is operated and maintained by the U S Space Force GPS gov is maintained by the National Coordination Office for Space-Based Positioning, Navigation, and Timing
  • GPS for Mapping | GPS. gov
    GPS for Mapping The most effective way to achieve a robust and globally consistent continental reference system is through the technology of the Global Positioning System (GPS) The explosive growth of GPS applications and the economics of GPS make it the technique of choice for sustainable geodetic operations within Africa
  • GPS. gov: El Sistema de Posicionamiento Global
    Servicios del GPS Los satélites del GPS proporcionan servicios a usuarios civiles y militares El servicio a civiles es gratuito y está a disposición de todos los usuarios de manera permanente y global El servicio militar se presta a las fuerzas armadas de los Estados Unidos, sus aliados y los organismos de gobierno debidamente autorizados
  • Recent News | GPS. gov
    The Department of Homeland Security Science and Technology Directorate announced an opportunity for Critical Infrastructure Owners and Operators and GPS equipment manufacturers to test their equipment against GPS disruption and spoofing The 2024 GPS Testing for Critical Infrastructure (GET-CI) event is set for the fall of 2024
  • What Can GPS Do? | GPS. gov
    What Can GPS Do? GPS and its augmentations are an essential element of a global information infrastructure The free, open, and dependable nature of GPS has led to the development of applications that billions of users worldwide rely on GPS technology is now in everything from cell phones and wristwatches to bulldozers, shipping containers
  • Support | GPS. gov
    GPS is operated and maintained by the U S Space Force GPS gov is maintained by the National Coordination Office for Space-Based Positioning, Navigation, and Timing
  • GPS Modernization | GPS. gov
    The GPS modernization program is an ongoing, multibillion-dollar effort to upgrade the features and overall performance of the Global Positioning System The upgraded features include new civilian and military GPS signals Improving GPS performance through modernization promotes the U S policy of maintaining leadership in the service, provision, and use of global navigation satellite systems





中文字典-英文字典  2005-2009