Chinese English

The production of a new or revised map or chart, or portions thereof, from existing maps, aerial photographs, surveys, new data and other sources or the selection, assembly, and graphic representation of all relevant information required for the preparation of a map or chart.

根据现有地图、航空影像、测量资料、新资料以及其他资料，生产新版或修订版地图或海图的过程，包括对相关信息的选取、组合和图形表达。

水深或水位永久参考面，通常采用低潮面作为海图基准面。也称作基准、基准水准、基准面、海道测量基准、参考基准水准、参考面。参见tidal datum（潮汐基准面）。

The Chart Evaluations Surveys (CES) program is designed to: 1. Resolve all deficiencies reported or discovered. (A deficiency is defined as charted information that can be made more complete through field examination, or information which should be charted but is not.) 2. Evaluate the adequacy/accuracy of hydrographic information on existing charts. 3. Verify or revise information published in the appropriate Coast Pilot. 4. Conduct user evaluation and public relations efforts to provide an awareness of products and obtain user input.

海图评估调查计划目的： 1. 解决所有所报告的或发现的缺陷（缺陷的定义是，可通过外业检验获得更完整的资料或应该标绘在图上而没有标绘的资料）。 2.评估现有海图海道测量信息的完整性和精度。 3.检验或校正沿岸航海指南中已发行的信息。 4.进行用户评价和公共关系努力，以提高产品的知名度，并获取反馈信息和输入。

A small auxiliary CHART giving new details on a particular area, to be added to the CHART after publication. Also calledblock correctionorchart amendment patch. A small CHART, such as one showing the coverage area of electronic navigational systems, with the distribution of its LINES OF POSITION, CORRECTIONS to be applied to readings, location and identification of TRANSMITTERS, etc.

在海图出版发行之后，一种对特定区域进行最新资料贴补的海图贴片，该海图贴片带有最新的信息。也称作改正块或海图小改正块。在电子海图导航系统中，类似的小海图通过其线条分布显示其覆盖范围，其改正信息是机器可读的。

Interpretation of the symbols, lines, abbreviations, and terms appearing on charts. May be called map reading when applied to maps generally.

The tidal datum to which soundings and drying heights on a chart are referred. It is usually taken to correspond to a low water stage of the tide. Often shortened to CHART DATUM, especially when it is clear that reference is not being made to a horizontal datum.

海图上水深和干出高度参照的基准面。通常采取相应的低潮水位，简称海图基准面，特别是参考基准明确不是水平基准时，更应该这样表述。

A character, letter, or similar graphic representation used on a chart to indicate some object, characteristic, etc. May be called map symbol when applied to any map.

海图上用于表示物标或特性的字符、字母或类似图形。对于其它地图而言，该术语可表述为地图符号（map symbol）。

在完成区域主测深线测量后，为了检查这些测深线而补充测量的测深线。参见cross lines of sounding（补充测深线）。

The total amount in GRAMS of chlorine, bromine and iodine contained in one KILOGRAM of SEA WATER, assuming that the bromine and the iodine had been replaced by chlorine. See SALINITY.