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	Term	术语	Definition	定义
	swash mark	冲痕	The thin wavy line of fine SAND, mica scales, bits of SEAWEED, etc., left by the UPRUSH when it recedes from its upward limit of movement on... more The thin wavy line of fine SAND, mica scales, bits of SEAWEED, etc., left by the UPRUSH when it recedes from its upward limit of movement on the BEACH.	当冲岸浪自其在岸滩上运动的最高界限后退时，所留下的细沙、云母片、海藻碎片等构成的薄层波纹线。
	swashway	冲刷航道	See SWASH.	在沙滩上或沙滩与海岸间的窄水道。亦称冲刷航道。海水冲刷成的沙坝。紧随波浪破碎后，海水冲上岸滩�... more 在沙滩上或沙滩与海岸间的窄水道。亦称冲刷航道。海水冲刷成的沙坝。紧随波浪破碎后，海水冲上岸滩。
	swath(e)	条带，宽行	The strip or lane on the ground or SEAFLOOR scanned by the SWATH(E) SOUNDING SYSTEM when the SURVEY platform proceeds along its COURSE.	当船只在其航线上工作时，多波束测深仪在海底扫描的条带或发射带。
	swath(e) sounding system	条带测深系统	A multi-beam system which is capable of obtaining a lane of soundings from a single ship's track.	在单一航迹上获得条带形测深资料的多波束系统。
	swath(e) system	条带系统	Any of a number of systems which are capable of obtaining a strip or lane of ELEVATIONs or SOUNDINGs from a single SURVEY PLATFORMS’s TRAC... more Any of a number of systems which are capable of obtaining a strip or lane of ELEVATIONs or SOUNDINGs from a single SURVEY PLATFORMS’s TRACK. In HYDROGRAPHY, systems that fall into this category are MULTI BEAM ECHO SOUNDERs (MBES), INTERFEROMETRIC ECHO SOUNDERs and LIDAR.	一套能够从单一测量平台轨道获取条带状高程或水深的系统。在海道测量系统中，属于这一类型的有多波�... more 一套能够从单一测量平台轨道获取条带状高程或水深的系统。在海道测量系统中，属于这一类型的有多波束测深仪（MBES）、干涉式测深仪和激光雷达。
	sway	横摆，左右摇	The side-to-side bodily motion of a ship, independent of ROLLING, caused by uniform pressure being exerted all along one side of the hull.	由均匀作用于船体一侧的压力引起的船只左右侧整体摆荡，与船的横摇不同。
	sweep	扫测，扫海	(v.t. & i.). To tow a line or object below the surface, to determine the least depth in an area or to insure that a given area is free from ... more (v.t. & i.). To tow a line or object below the surface, to determine the least depth in an area or to insure that a given area is free from navigational dangers to a certain depth; or the removal of such dangers.	在海面拖曳绳索或物体，用以测定区域内最浅深度，或保证在给定区域的一定深度内免遭航行危险；或清�... more 在海面拖曳绳索或物体，用以测定区域内最浅深度，或保证在给定区域的一定深度内免遭航行危险；或清除这种危险。
	sweeping	扫海	The process of towing a line or object below the surface, to determine whether an area is free from isolated submerged dangers to vessels an... more The process of towing a line or object below the surface, to determine whether an area is free from isolated submerged dangers to vessels and to determine the position of any dangers that exist, or to determine the least depth of an area.	在海面下拖曳绳索或物体，用以测定区域内是否使船只不受水下孤立危险物威胁，并测定任何存在危险物�... more 在海面下拖曳绳索或物体，用以测定区域内是否使船只不受水下孤立危险物威胁，并测定任何存在危险物的位置，或测定区域内最浅深度的过程。
	swell	涌浪，海涌；上涨；小山包	Ocean waves which have travelled out of their generating area. Swell characteristically exhibits a more regular and longer PERIOD and has fl... more Ocean waves which have travelled out of their generating area. Swell characteristically exhibits a more regular and longer PERIOD and has flatter CRESTS than WAVES within their FETCH. Rising of the water of a RIVER above its usual LEVEL. Gently rising GROUND or a rounded HILL above the surrounding GROUND.	超出其产生区域的海洋波浪。涌浪的特性是在其吹程内比波浪呈现出更规则和更长的周期，其波峰较扁平�... more 超出其产生区域的海洋波浪。涌浪的特性是在其吹程内比波浪呈现出更规则和更长的周期，其波峰较扁平。江河水面升至其正常水位之上。缓和隆起的地面或高于周围地面的圆形山丘。
	swept area	扫测水域	An area that has been determined to be clear of navigational dangers to a specified DEPTH	关于一个特定深度，已经精确确定区域内水深可安全航行的区域。
	swing	旋角	In PHOTOGRAMMETRY, a rotation of a PHOTOGRAPH in its own plane about its camera axis.	在摄影测量中，像片本身的平面绕其摄影机轴线的旋转角度。
	swinger	回转定位，无效定位	See FIX: CIRCULAR.	当观测两个角得出三个位置圆重合时，则定位为无效位置，亦称revolver或swinger。
	swinging buoy	旋回浮标	See COMPASS ADJUSTMENT BUOY.	设置在适当位置，以帮助船只校正罗经的浮标。亦见swinging ship（旋回船）。
	swinging ship	自差校正	The process of placing a vessel on various HEADINGS and comparing MAGNETIC COMPASS readings with the corresponding magnetic DIRECTIONS, ... more The process of placing a vessel on various HEADINGS and comparing MAGNETIC COMPASS readings with the corresponding magnetic DIRECTIONS, to determine DEVIATION. This usually follows COMPASS COMPENSATION (or ADJUSTMENT), and is done to obtain information for making a DEVIATION TABLE. Also called compass calibration, or calibration of compass. See COMPENSATION OF MAGNETIC COMPASS.	以各种船艏方向安置船只，并用相应的磁方向比较磁罗经读数，用以测定磁偏差的过程。这个过程紧接着�... more 以各种船艏方向安置船只，并用相应的磁方向比较磁罗经读数，用以测定磁偏差的过程。这个过程紧接着罗经校正，用于获得编制自差表的资料，亦称compensation of magnetic compass或calibration of compass。参见compensation of magnetic compass（磁罗经校正）。
	swirl error	漩涡误差	See ERROR.	液体磁罗经转向期间由于液体摩擦所产生的外加读数误差。
	symbol	符号，图例	A CHARACTER, letter, or similar graphic representation used on a CHART, MAP, HYDROGRAPHIC SURVEY SHEET, or DIAGRAM to represent some obj... more A CHARACTER, letter, or similar graphic representation used on a CHART, MAP, HYDROGRAPHIC SURVEY SHEET, or DIAGRAM to represent some object, quantity, characteristic, etc.	用于海图、地图、海道测量原图或示意图上的标志、字符、或图形，代表实地的一些物体、数量、特征等�... more 用于海图、地图、海道测量原图或示意图上的标志、字符、或图形，代表实地的一些物体、数量、特征等。
	synodical month	朔望月	See MONTH.	月亮相继两次合或冲所经历的时间，朔望月的周期是29.5305888个平太阳日。亦称lunation或lunar month。
	synodic (or synodical) period	朔望（交合)周期	The interval of time between any planetary configuration of a CELESTIAL BODY, with respect to the SUN, and the next successive same configur... more The interval of time between any planetary configuration of a CELESTIAL BODY, with respect to the SUN, and the next successive same configuration of that body, as from INFERIOR CONJUNCTION to INFERIOR CONJUNCTION.	对于太阳来说天体（行星）的某种相对位置与下一次再现同一种相对位置的时间间隔，即内合与内合之间�... more 对于太阳来说天体（行星）的某种相对位置与下一次再现同一种相对位置的时间间隔，即内合与内合之间的时间间隔。
	synoptic analysis	天气图分析	Sea WEATHER ANALYSIS.	对于天气图而言，研究一个区域大气的整体状况。也叫synoptic analysis。
	synoptic chart (or map)	天气图	See CHART (or MAP): WEATHER.	用数字、符号或等值线表示气象条件和要素的地图。亦称synoptic chart (or map)。
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