Chinese English

DISPLACEMENT of IMAGES radially inward or outward with respect to the PHOTOGRAPH NADIR, according as the ground objects are, respec­tively, below or above the ELEVATION of the GROUND NADIR.

由于地面物体分别在地底点高度之上或之下，因而使图像迅速朝着像底点或背离像底点发生位移，这种位移即为投影差。

A scaled representation in three dimen­sions of a section of the CRUST of the EARTH, or of another HEAVENLY BODY. A relief model primarily desi­gned to display features on the surface of the EARTH is sometimes known as a topographic model.

以三维形式按比例表示地壳或其它天体的某一部分。主要用于显示地球表面特征的立体模型有时也称地形模型。

The measurement or acquisition of information of some property of an object or phenome­non by a recording device that is not in physical or infinite contact with the object or phenomenon under study. Sometimes restricted to the practice of data collection in the wavelengths from ultraviolet to radio regions.

利用不直接接触或远距离接触所研究的物体或现象的记录装置测量或获取该物体或现象的某些性质的信息。有时只限于采用从紫外线到无线电波段的仪器进行数据采集。

An unmanned submersi­ble craft which can be used either for observation purposes or to perform hydrographic surveys, or for working purposes. Also called "remotely controlled vehicle (RCV)".

（ROV）无人操作的水下器具，能用于观测或海道测量作业，或用于施工。亦称remotely controlled vehicle（RCV）(遥控潜水器)。

In a navigation system, the measu­re of the accuracy with which the system permits the user to return to a position as defined only in terms of the coordinates peculiar to that system. For exam­ple, the distance specified for the repeatable accura­cy of the system such as LORAN‑C is the distance bet­ween two LORAN‑C positions established using the same stations and time‑difference readings at diffe­rent times. The correlation between the geographical coordi­nates and the system coordinates may or may not be known.

在导航系统中，能使用户返回到仅适合该系统所确定之坐标位置的精度。例如，用于LORAN-C系统重复精度规定的距离，是两个LORAN-C位置的距离，这两个位置是在不同时间用同样的台站和时间差读数建立的。已知或未知的地理坐标和系统坐标间的相互关系。

能在一定距离上重复仪器显示的装置。参见compass repeater（罗盘复示器），gyro repeater（陀螺复示器），steering repeater（操舵罗经复示器）。

一种经纬仪，可将对某角的连续测量累计到度盘上并可读出度盘上表示该复测总和的最后读数。将该读数除以测角次数即可得出该角的观测值。亦称repeating instrument（复测仪）。参见repetition method of observation（重复观测法）。

(U.S. terminology). An issue of a CHART the supply of which is approaching exhaustion. The reprint is an exact duplicate of the current issue with no changes in printing or publication data.

In CARTOG­RAPHY, the processes involved in printing copies from an original drawing. The principal processes are PHOTOGRAPHY, LITHOGRAPHY (or ENGRA­VING), and printing. A printed copy of an original drawing, made by any of the processes of reproduc­tion.

在制图过程中，指根据原图进行印刷、拷贝的工艺，主要工序是照像、制版和印刷。 任何复制工序制作的原图印刷拷贝。

Reproduction material, generally in the form of positive or negative copies on film or glass for each colour plate, from which a map or chart may be reproduced without redrafting.

用于复制的材料，一般在膜片或玻璃上形成各印色要素版的正像或负像，由此可以不再重绘而制出海图或地图。

A unit responsible for promoting efficient organization of search and rescue services and for coordinating the conduct of search and rescue operations within a search and rescue region. Also called Maritime Rescue Co-ordination Centre (MRCC) and Joint Rescue Co-ordination Centre (JRCC).

负责提升搜救服务组织效率，并在搜救区域负责搜救协调组织的机构。也称为海上救助协调中心(MRCC)和联合救助协调中心(JRCC)。