| Chinese | English |
| 保水系数 | water retention coefficient |
| 关系型数据库 | relational database A collection of digital information items organized as a set of formally described tables from which the information can be accessed or reassembled in different ways without reorganizing the tables (以一组正则表达式描述的表的形式来组织数字信息的集合。通过表，信息可以通过不同的方式被访问和重组，而不用重新组织表。) |
| 国家环境数据分配系统 | National Environmental Data Referral System |
| 图像处理数字系统 | image processing digital system A coordinated assemblage of computer devices designed to capture and manipulate pictures stored as data in discrete, quantized units or digits (一个电脑设备的整合系统，该系统被用来获得与处理图片，储存成离散化、量子化或数位化的单元或形式。) |
| 地球资源观测系统数据中心 | earth resources observation system Data Center |
| 地球资源观测系统数据中心 | EROS Data Center |
| 地理信息系统数字形式 | GIS digital format The digital form of data collected by remote sensing (通过遥感收集的数据的数字形式。) |
| 地理信息系统数字技术 | GIS digital technique The transformation to digital form of data collected by remote sensing, traditional field and documentary methods and of existing historical data such as paper maps, charts, and publications (对由遥感，传统领域和文件的方法和现有的历史数据,如纸张地图，图表和出版物等收集的数据以数字形式转变。对由遥感技术收集的数据、传统领域和文件方式(存储)的数据以及现有的历史数据，如纸张地图，图表和出版物等，向数字形式进行转变的技术。) |
| 地理信息系统数字系统 | GIS digital system An organized collection of computer hardware, software, geographic data, and personnel designed to efficiently capture, store, update, manipulate, analyze, and display all forms of geographically referenced information that can be drawn from different sources, both statistical and mapped (一种计算机硬件、软件、地理数据和人事部门的有组织的收集，旨在有效获取、存储、更新、操纵、分析和显示各种形式的地理参照信息，可以从不同的来源，如统计数据和绘制地图来绘画。) |
| 幸存系数 | survival factor |
| 排放系数 | emission factor The relationship between the amount of pollutants produced to the amount of raw materials processed, or fuel consumed, in any polluting process (污染产生的过程中，污染物的数量与原料的使用量或者燃料的消耗量之间的关系。) |
| 数据处理系统 | data processing system An assembly of computer hardware, firmware and software configured for the purpose of performing various operations on digital information elements with a minimum of human intervention (电脑硬件、固件和软件的集合，以最低的人为干预对数字信息元素进行不同的操作。) |
| 渗透〔磁导〕系数 | permeability coefficient |
| 生物富集系数 | bioconcentration factor The quotient of the concentration of a chemical in aquatic organisms at a specific time or during a discrete time period of exposure, divided by the concentration in the surrounding water at the same time or during the same period (在特定时间或在离散的时间段，在水生生物中化学物质的浓度商数；在同时或者在同一个时间段，被周边水剂浓度，除得到的商。) |
