Term 术语 Definition 定义
seaward
向海的,向海底
(adj. and adv.). Away from the LAND; toward the SEA.
(形容词和副词)远离陆地的;朝向海洋的。
sea water
海水
The water of the SEAS, distinguished from fresh water by its appreci­able SALINITY. The degree of the SALINITY greatly affects the water's ... more
The water of the SEAS, distinguished from fresh water by its appreci­able SALINITY. The degree of the SALINITY greatly affects the water's physical charac­teristics.
海洋里的水,以其相当大的含盐量区别于淡水。海水盐度的大小对海冰的物理特性影响较大。
sea water: colour of
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The apparent colour of the sur­face layers of the SEA caused by the REFLECTION of certain components of the visible light spectrum cou­ple... more
The apparent colour of the sur­face layers of the SEA caused by the REFLECTION of certain components of the visible light spectrum cou­pled with the effects of dissolved material, con­centra­tion of PLANKTON, DETRITUS, or other matter. Colour of oceanic water varies from deep blue to yellow and is expressed by number values which are a variati­on of the FOREL SCALE. Plankton concentrations may cause a tempo­rary appearance of red, white, green, or other colours. Also called water colour. See also DISCOLOURED WATER.
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seaway
中浪;航进;航道,航线
A moderately rough SEA. Used chiefly in the expression 'in a seaway'. HEADWAY of a vessel. The SEA as a route of travel from one place to an... more
A moderately rough SEA. Used chiefly in the expression 'in a seaway'. HEADWAY of a vessel. The SEA as a route of travel from one place to ano­ther; a shipping LANE.
中等风浪的海面。主要用于表达“在中浪海区”。 船只的前进。 海上一地到另一地的通行路线;海运通... more
中等风浪的海面。主要用于表达“在中浪海区”。 船只的前进。 海上一地到另一地的通行路线;海运通道。
seaweed
海藻(草)
Any macroscopic marine ALGA or SEAGRASS.
泛指肉眼可见的海藻或海草。
Secchi disc
赛克板,海水透明度板
A white, black, or varicoloured disc, 30 centimetres in diameter, used to measure water trans­parency (clarity). The disc is lowered in the... more
A white, black, or varicoloured disc, 30 centimetres in diameter, used to measure water trans­parency (clarity). The disc is lowered in the water and the DEPTH (in METRES) at which it disappears from sight is averaged with the DEPTH at which it reappe­ars. This average value is used to represent sea water transpar­ency.
用于量测海水透明度的圆盘,直径30厘米,涂为白色、黑色或其它颜色。将圆盘沉入水中,降至观测者肉眼... more
用于量测海水透明度的圆盘,直径30厘米,涂为白色、黑色或其它颜色。将圆盘沉入水中,降至观测者肉眼看不见的深度(以米表示),再升至看得见的深度,采用两深度的平均值表示海水透明度。
second
秒,弧秒
The unit of TIME in the SI system. A sixtieth part of a MINUTE, an angle or an arc.
国际单位制中的时间单位。一秒等与六十分之一分,一角秒等于六十分之一角分,一弧秒等于六十分之一... more
国际单位制中的时间单位。一秒等与六十分之一分,一角秒等于六十分之一角分,一弧秒等于六十分之一弧分。
secondary port
副港
See STATION: SUBORDINATE.
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... more
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。 在英国术语中也称作附属站。参见tide station(验潮站)。
secondary radar
辅助雷达
See RADAR: PRIMARY.
参见primary radar(主雷达)。
secondary station
补充点
See STATION: SUPPLEMENTARY.
在给定区域为增加控制点数量而设立的辅助测站,或在不可能或不需要设置主要测站的地方所设的站。
secondary tide(s)
次生潮,副潮
See TIDE.
在一般的全日潮模型中,当月球位于赤道上空时,每月发生两次的那些附加高低潮和低高潮潮汐。
secondary tide station
短期验潮站;二级验潮站,二等水位站
See STATION: TIDE.
进行潮汐观测的地点称作验潮站。当有可能进行充分的、连续多年的观测,以确定该地点潮汐特征的称作... more
进行潮汐观测的地点称作验潮站。当有可能进行充分的、连续多年的观测,以确定该地点潮汐特征的称作主验潮站。为特殊目的获得数据而进行的短周期作业称作短期验潮站。
second nodal point
第二节点
See NODAL POINT.
参见nodal point(节点)。
second order triangulation
二等三角测量
See TRIANGULATION CLASSI­FICA­TION.
参见triangulation classfication(三角测量等级)。
section
截面
Process of locating and coordinating a point from at least two existing control stations by observing horizontal directions from the control... more
Process of locating and coordinating a point from at least two existing control stations by observing horizontal directions from the control stations to the point. Also called intersection.
通过从控制点到目标点进行水平方向观察,并从现有的至少两个控制点来定位目标点的过程。亦称intersectio... more
通过从控制点到目标点进行水平方向观察,并从现有的至少两个控制点来定位目标点的过程。亦称intersection。
sector scan sonar
扇扫声呐
A horizontal aperture SONAR used to detect obstructions ahead of the vessel by mechanical or electronic scanning in the horizontal plane.
用于探测障碍物的水平开角声纳,以水平平面在船头进行机械或电子扫描。
secular change
长期变化
An increase or decrease of intensity and/or change of direction of the total MAGNETIC FIELD over a period of many years.
在多年周期内,总磁场强度的增减及方向变化。
sediment
沉积,沉积物
Particulate organic and inorganic matter which accumulates in a loose unconsolidated form. It may be chemically precipitated from solution, ... more
Particulate organic and inorganic matter which accumulates in a loose unconsolidated form. It may be chemically precipitated from solution, secreted by organisms, or transported by air, ICE, WIND, or water and deposited.
以不固结形式聚集的颗粒状有机或无机物。沉积的形成或因溶液的化学沉淀,或因有机物的分泌,或因大... more
以不固结形式聚集的颗粒状有机或无机物。沉积的形成或因溶液的化学沉淀,或因有机物的分泌,或因大气、冰、风及水的搬运和堆积。
sediment(s): bottom
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In general all sedimentary materi­al regardless of origin found on or in the submarine BOTTOM, including ballast or other material dumped i... more
In general all sedimentary materi­al regardless of origin found on or in the submarine BOTTOM, including ballast or other material dumped into the SEA by man. More specifically it is limited to unconsolidated mineral and organic material forming the sea bottom, not including CORAL REEFS or BEDROCKS.
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sediment survey
沉积测量
A survey to determine the nature and distribution of types of sea bottom SEDIMENTS.
调查海底沉积物特征、分布和类别的测量。