Term 术语 Definition 定义
geodetic line
大地线
See GEODESIC LINE.
参见geodesic line(大地线)。
geodetic longitude
大地经度
See LONGITUDE.
大地子午线平面与任意选定的初始子午线平面之间的夹角。
geodetic meridian
大地子午线
See MERIDIAN.
旋转椭球体上其各点具有相同大地经度的线。
geodetic parallel
大地纬圈
See PARALLEL.
在旋转球体上,线上各点具有相同大地纬度的一条线。大地纬圈不同于赤道,它不是大地线。在形式上,它只是一个小圆,它的平面与大地赤道平面平行。
geodetic position
大地位置
See POSITION.
从某一起始站进行三角测量而确定的地球上某一点的坐标。起始站的位置已根据天文观测的结果确定。这样的位置坐标取决于所使用的参考椭球体。
geodetic survey
大地测量
See SURVEY.
研究地球形状或者大小的测量。大地测量应用于大范围、长路线,并用于基本测站的精密定位,这些测站适合控制其它测量。
geographic(al) coordinates
NULL
See COORDINATES.
NULL
geographic information system
地理信息系统
A computer based system for handling and integrating data from a variety of sources which is directly or indirectly spatially referenced to ... more
A computer based system for handling and integrating data from a variety of sources which is directly or indirectly spatially referenced to Earth.
处理和集成来自多种数据源数据的计算机系统。数据源的数据都直接或者间接的以地球为参考。
geographic(al) latitude
地理纬度
See LATITUDE.
天文纬度和大地纬度的统称。
geographic(al) longitude
地理经度
See LONGITUDE.
天文经度和大地经度的统称。
geographic(al) meridian
地理子午线
See MERIDIAN.
通用术语,指天文子午线和大地子午线。
geographic(al) parallel
地理纬圈
See PARALLEL.
在地球上其各点具有相同纬度的一条线。该词可以与天文纬圈和大地纬圈通用。
geographic(al) pole
地极
See POLE.
地球表面与其轴的两个交点之一,N或者S分别表示北地极和南地极。
geographic(al) position
地理位置
See POSITION.
用经度和纬度表示的地球表面某点的位置,既可以是天文位置,也可以是大地位置。
geographic(al) range
地理范围,地理能见距离
See RANGE.
灯光能被看到的最大距离,是地球曲率、光源和观测者高度的函数。
geoid
大地水准面
The FIGURE OF THE EARTH considered as a mean sea level surface extended continuously through the CONTI­NENTS. The actual geoid is an EQUIPOT... more
The FIGURE OF THE EARTH considered as a mean sea level surface extended continuously through the CONTI­NENTS. The actual geoid is an EQUIPOTENTIAL SURFACE to which, at every point, the PLUMB LINE (direction in which GRAVITY acts) is perpendicular. It is the geoid which is obtained from observed DEFLECTIONS OF THE VERTICAL and is the surface of reference for ASTRONOMI­CAL OBSERVATIONS and for GEODETIC LEVEL­LING. See REFERENCE SPHEROID.
假定海平面向大陆延伸而包围地球形成的球面。实际上它是一个等位面,其上每点的铅垂线均与该点所处的面垂直。它是通过观测垂线偏差确定的。是天文观测和大地水准测量使用的参考面。参见reference spheroid(参考椭球)。
geologic(al) survey
NULL
See SURVEY.
NULL
geologic(al) time
NULL
See TIME.
NULL
geology
地质学
The science which has for its object the investigation of the EARTH's CRUST, of the STRATA which enter into its composition with their mutua... more
The science which has for its object the investigation of the EARTH's CRUST, of the STRATA which enter into its composition with their mutual relations, and of the successive changes to which their present condition and position are due.
研究地壳、岩层成分和它们之间的相互作用和发展变化的一门科学。
geology: submarine
海底地质学
A field of study which applies the science of GEOLOGY to the earth beneath the SEA.
研究海底地质现象的专门科学。