Term 术语 Definition 定义
submarine sound signal
水中音响信号
See SOUND SIGNAL.
通过水传播的音响信号。
submarine spring
海底(源)泉
See SPRING.
大潮。水或其它物质从地面自然涌出,发生在海底者称submarine spring(海底泉)。
submarine transit lane
海底运输通道
A LANE where submarines may NAVIGATE under water or at the surface.
潜艇可以在其水下或表面通航的一个通道。
submarine valley
海底山谷
See VALLEY.
一种较浅、坡度变化较缓的宽凹陷地,其底部逐步向下延伸。本词用于描述广义上的无峡谷特性地形。
submarine volcano
海底火山
A seabed volcano, submerged at the chart sounding datum, which may or may not be active.
淹没在海图基准面以下的海底火山,可以是活火山,也可以不是活火山。
submerged
在海中的,海面下的,沉(浸,潜,淹)没的
(adj.). Under water; not showing above water. The opposite is UNCOVERED.
水下的;不露出水面的。与其相反的是uncovered。
submerged rock
暗礁
A rock covered at the chart sounding datum and considered to be potentially dangerous to navigation.
淹没在海图基准面下,并认为对航行有潜在危险的礁石。
subordinate station
附属(验潮)站
See STATION.
根据参考站预报经改正确定其潮汐或潮流预报的地点之一。完成短周期观测并经过与参考站同步观测相比较而化算的潮汐或潮流测站。在英国术语中称为secondary port 。参考tide station。
subpermanent magnetism
半永久磁性;次恒磁
See MAGNETISM: PERMANENT.
指磁铁除非遭受消磁处理,否则它的磁性能保持很长时期而不会显著减弱,因为这种磁性的消散缓慢,有时称之为subpermanent magnetism(次恒磁)。
subplan
辅助图,附图
An INSET on a SURVEY SHEET used to extend the survey coverage shown on the sheet, or to show small congested areas at enlarged SCALES.
海量原图上的附图,用于在图幅上扩展表示测量范围或以放大比例尺表示小块稠密地区。
sub-point
下点,投影点,星下点
That point on the surface of the EARTH at which a particular CELESTIAL BODY is in the ZENITH at a specified TIME. Also called 'geographical ... more
That point on the surface of the EARTH at which a particular CELESTIAL BODY is in the ZENITH at a specified TIME. Also called 'geographical position of a celestial body'. Calledsub-celestial point in Cana­dian terminology. See SUBLUNAR POINT, SUBSOLAR POINT, SUBSTELLAR POINT.
在特定时刻,特定的天体位于天顶时的地球表面点。亦称geographical position of a celestial body。加拿大术语为sub-celestial point 。参见sublunar point,subsolar point, substellar po... more
在特定时刻,特定的天体位于天顶时的地球表面点。亦称geographical position of a celestial body。加拿大术语为sub-celestial point 。参见sublunar point,subsolar point, substellar point。
sub-sea completion
海底完井
See WELL: PRODUCTION.
生产石油或天然气的钻井,它由一海床阀门或管道装置覆盖,以控制开采。亦见sub-sea completion(海底完井)。
subsidiary station
中间点
See STATION.
为克服测量过程中某些局部障碍而设置的点,该点不能为测站点确定位置数据。
subsoil
底土,下层土
All naturally occurring matter lying beneath the sea-bed or deep ocean floor.
海床或深海底以下的所有自然存在的物质。
subsolar point
日下点
The GEOGRA­PHICAL POSITION of the SUN; that point on the EARTH at which the SUN is in the ZENITH at a specified TIME.
太阳的地理位置。在特定时刻,太阳位于地球上该点天顶。
subsonic
亚声(速)的,亚音(速)的
(adj.). Designating or of SPEEDS that are less than that of SOUND.
速率比声速小的。
substellar point
星下点
The GEOGRAPHICAL POSITION of a STAR; that point on the surface of the EARTH at which the STAR is in the ZENITH at a specified TIME. Also cal... more
The GEOGRAPHICAL POSITION of a STAR; that point on the surface of the EARTH at which the STAR is in the ZENITH at a specified TIME. Also called subastral point.
星球的地理位置;在特定时刻,星球位于地球表面该点的天顶。亦称subastral point。
substitute centre
替代中心
A point which, because of its ease of identifica­tion on overlapping PHOTOGRAPHS, is used instead of the PRINCIPAL POINT as a RADIAL CENTRE.
用于替代像主点作为径向中心的点,该点在重叠像片上易于辨别。
substitute map
地图代用品,代用地图
See MAP.
当地图精度不能满足要求时,用一种快速复制的大面积覆盖航片,像片地图或镶嵌图,或临时地图或其它任何文件代替的地图。
subsurface current
次表层流
See CURRENT.
通常在温跃层下流动的海流。这种海流一般流速较慢,流向通常与接近海面的海流不同。