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- electronic chart data base 电子海图数据库
- In order to get the more accuracy benthos terrain, not only the discrete electronic chart data but also the fathom lines etc data are considered. 海底地形不但考虑了离散点电子海图数据,而且也将某些特征数据考虑在内,从而生成相对精度较高的海底地形。
- World Electronic Navigational Chart Data Base; 世界电子导航图数据库;
- Are Those the Works of Plaintiff's Electronic Data Base? 原告的电子数据库是作品吗?
- In a data base, the smallest unit of data that can be referred to. 在数据库中，可被访问的最小数据单位。
- All elevations are relative to chart datum. 所有标高均相对于海图基准面。
- International historical chart data and daily updatesprovided by. 历史图线数据和每日更新由提供。
- The overall logical organization of a data base. 一种数据库的总体的逻辑结构。
- Principle and application of engineering data base. 工程数据库原理及应用。
- The demonstration program of data base query. 数据库查询示例程序
- One moment. While we connect our data base. 稍等,连接数据库。
- Data Base Error reading sector on hard disk. 在硬碟上有错误的磁区而阻碍正确档案的读取。
- Many international organizations like IHO, IMO and IEEE have participated in the constitution of ECDIS standards, finally, they managed to accomplish the international standards of data transfer and symbol display of Electronic Chart. 国际海道测量组织、国际海事组织以及国际电工委员会等多个国际相关组织积极参与了标准的拟定工作,最后实现了电子海图数据传输和符号显示的国际标准化。
- In data base terminology, a single instance, for example, a set occurrence, a record occurrence. 在数据库术语中，一个单一实例，例如，一组具体值，一个记录的具体值。
- Chart Datum: The level to which soundings or tide heights are referenced. 海图基准面:测量水深或潮水高度的基础高度。
- At present, most Electronic Chart Display and Information System (ECDIS) only appearances with uniprocessor version, and faces to the single user, and the data of chart can't be updated in time. 目前,电子海图显示与信息系统(ECDIS)多是以单机版形式出现,面向的用户比较单一,同时海图数据得不到及时更新。
- The time is Hong Kong Time. Height of Tide is in metre above the Chart Datum. 时间是香港时间。潮水高度为海图基准面以上高度，以米为单位。
- The basic realization algorithms for the electronic chart are introduced,such as drawing the coastline,chart navigation,minifying and enlarging,etc. 介绍简易电子海图海岸线标绘,海图漫游以及海图缩放的基本实现算法。
- The ability of an electronic design data base to recognize connections by association of data. Connectivity facilitates design automation and CAM processing. 一个电子设计数据库通过数据联系去识别连接的能力。连通性有助于设计自动化和计算机辅助制造。
- In a relation data base, the number of tuples in a relation. 关系数据库中，一个关系的元组数目。
