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Total record count: 6216.

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	Term	术语	Definition	定义
	cyclone	气旋，低气压	See DEPRESSION.	参见depression（低气压）。
	cylindrical buoy	罐形浮标；圆筒形浮标	See CAN BUOY.	参见can buoy（罐形浮标）。
	cylindrical projection	柱面圆柱投影，圆柱投影	See PROJECTION.	将地理经纬线投影到与椭球相切或相割的圆柱上，然后将圆柱展成一个平面得到的投影。
	daily rate	天文钟日差率	See CHRONOMETER RATE.	参见chronometer rate（天文钟日差率）。
	daily retardation	潮汐延时，潮汐滞后	The amount of time by which corresponding tidal PHASES grow later day by day (averages approximately 50 MINUTES).	相应的潮汐相位每日延迟的时间量（平均大概是50分钟）。
	dam	闸，水闸，大坝	A barrier to check or confine anything in motion; particularly one constructed to hold back water and raise its level to form a RESERVOIR, o... more A barrier to check or confine anything in motion; particularly one constructed to hold back water and raise its level to form a RESERVOIR, or to prevent flooding.	一种阻挡或限制任何运动物体的关卡。特别是一种用来阻挡洪水，并提高水位而形成水库或者防洪的一种�... more 一种阻挡或限制任何运动物体的关卡。特别是一种用来阻挡洪水，并提高水位而形成水库或者防洪的一种建筑。
	damped wave(s)	衰减波，减幅波	See WAVE.	振幅逐步减小的波。
	damping	衰减，阻尼，减幅	The dissipation of energy with TIME or distance. The progressive reduction of AMPLITUDE of OSCILLATIONS, WAVES, etc.	指能量随着时间或距离而消减。振荡、波等的振幅逐步减弱。
	dan buoy	临时浮标，小浮标	A BUOY consisting of a ballasted FLOAT carrying a staff which supports a flag or LIGHT.	在平衡浮子上装一标杆，并在标杆上挂旗或悬灯的一种浮标。
	danger angle	危险角	The maximum (or minimum) angle between two points, as observed from a craft, indicating the limit of safe approach to an offlying danger.	从船上观测的两个点之间的最大（最小）角度，它致命接近危险物外围的安全界限。
	danger area	危险区	An area designated by a proper authority, in which a danger to craft exists. Also called danger zone.	由有关管理部门划定的区域，在该区域航行有危险，亦称作危险区域。
	danger bearing	危险方位	See BEARING.	能避开危险物，保证航行安全的点的最大方位或最小方位。
	danger buoy	碍航物浮标，碍航物浮标	See ISOLATED DANGER MARK.	参见isolated danger mark（孤立碍航物标志）。
	danger line	危险线	A line drawn on a CHART, to indicate the limits of safe NAVIGATION for a vessel of specific DRAFT. A dotted line on a CHART to emphasize the... more A line drawn on a CHART, to indicate the limits of safe NAVIGATION for a vessel of specific DRAFT. A dotted line on a CHART to emphasize the presence of an OBSTRUCTION.	1.海图上绘制的一条标志线，为吃水船舶指示安全航行的界线。 2.海图上的点虚线，强调障碍物的存在。
	dangerous rock	危险礁石	A SUNKEN ROCK of a small area (PINNACLE), at such a DEPTH as to be considered dangerous to SURFACE NAVIGATION.	一种小面积（顶峰）的暗礁，其深度被认为对水面航行构成危胁。
	dangerous semicircle	危险半圆	Region of a TROPICAL CYCLONE, situated to the right of its PATH in the northern hemisphere and to the left of its PATH in the southern hemis... more Region of a TROPICAL CYCLONE, situated to the right of its PATH in the northern hemisphere and to the left of its PATH in the southern hemisphere, in which the SEAS are higher and the WINDS more violent and tend also to carry shipping forward on to the CYCLONE's PATH. The other half of the CYCLONE is termed the navigable semicircle.	一个热带气旋区域，在北半球它处于气旋轨迹的右边，在南半球它处于气旋轨迹的左边。在该区域，海浪�... more 一个热带气旋区域，在北半球它处于气旋轨迹的右边，在南半球它处于气旋轨迹的左边。在该区域，海浪很高、风异常猛烈，同时有使航行偏向于气旋轨迹的趋势。气旋的另一半被称为可航半圆（navigable semicircle）。
	dangerous wreck	危险沉船	A WRECK submerged at such a DEPTH as to be considered dangerous to SURFACE NAVIGATION.	其深度对水面航行构成危胁的沉船。
	danger sounding	危险水深	See SOUNDING.	在给定区域内为特定的船舶选取的最小水深值，以指示船舶安全航行的水深。
	danger to navigation	航行危险物	Any feature or condition that might hinder, obstruct, endanger or otherwise constitute danger to safe navigation.	对航行安全构成妨碍、阻碍、危险、危害的要素或物标。
	danger zone	危险区	See DANGER AREA.	参见danger area（危险区域）。
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