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	Term	术语	Definition	定义
	bay closing line	海湾封闭线	A line dividing the internal waters and territorial seas in a bay.	海湾中划分内水和领海的线。
	bay ice	湾冰	Level FAST ICE of more than one winter's growth, which may be nourished by surface layers of SNOW. Thickness of ICE and SNOW up to about 2 m... more Level FAST ICE of more than one winter's growth, which may be nourished by surface layers of SNOW. Thickness of ICE and SNOW up to about 2 m above SEA LEVEL. When bay ice becomes thicker than this, it is called an ICE SHELF.	一种平坦的固定冰，这种冰是由多年的结冰和积雪形成的。冰雪厚度约高出海平面2米。当湾冰的厚度超过2... more 一种平坦的固定冰，这种冰是由多年的结冰和积雪形成的。冰雪厚度约高出海平面2米。当湾冰的厚度超过2米时，则称之为冰架。
	bayou	长沼	A minor sluggish WATERWAY or estuarial CREEK, generally tidal or characterized by a slow CURRENT, with a COURSE generally through LOWLANDS o... more A minor sluggish WATERWAY or estuarial CREEK, generally tidal or characterized by a slow CURRENT, with a COURSE generally through LOWLANDS or SWAMPS, TRIBUTARY to or connecting with other bodies of water. Various specific meanings have been implied in different parts of the Southern United States. Sometimes called SLOUGH.	一种流动缓慢的小水道或港湾支流，其基本特点是流速缓慢，有潮汐现象。一般是经过低地或沼泽地，支�... more 一种流动缓慢的小水道或港湾支流，其基本特点是流速缓慢，有潮汐现象。一般是经过低地或沼泽地，支流流向其他水体或与其他水体相连。在美国南方各地则有许多特殊含意。有时称作泥沼（slough）。
	beach	海滩	On a SHORE, the area on which the WAVES break and over which shore debris, such as SAND, SHINGLE, PEBBLES accumulate. A beach includes BACKS... more On a SHORE, the area on which the WAVES break and over which shore debris, such as SAND, SHINGLE, PEBBLES accumulate. A beach includes BACKSHORE and FORESHORE.	指经波浪冲击的海岸地带，其上覆盖有各种碎石，如沙、砾石、卵石等。海滨包括前滨和后滨。
	beach comber	拍岸浪	See COMBER.	参见comber（卷浪）。
	beacon	信标	A fixed artificial NAVIGATION MARK that can be recognised by its shape, colour, pattern, TOPMARK or light character, or a combination of the... more A fixed artificial NAVIGATION MARK that can be recognised by its shape, colour, pattern, TOPMARK or light character, or a combination of these. It may carry various additional AIDS TO NAVIGATION. This term is not commonly used when the NAVIGATION MARK can be classified as a LIGHTHOUSE.	固定人工导航标志，通过形状、颜色、图案、顶标、灯质或这些要素的组合加以识别，其可携带各种其它�... more 固定人工导航标志，通过形状、颜色、图案、顶标、灯质或这些要素的组合加以识别，其可携带各种其它助航标志。当航标可归为灯塔类时很少用该术语表述。
	beacon: aeronautical	航空灯标，航空信标	An AERONAUTICAL GROUND LIGHT visible at all AZIMUTHS, either continuously or intermittently, to designate a particular point on the surface ... more An AERONAUTICAL GROUND LIGHT visible at all AZIMUTHS, either continuously or intermittently, to designate a particular point on the surface of the EARTH. A radiobeacon may be coterminous with the aeronautical beacon.	全方位可见、持续或间断发光的航空地面灯标，用于指示地面特定位置点。无线电信标可与其结合使用。
	beacon: hazard	障碍标，危险物立标，危险警告信标	A BEACON marking an OBSTRUCTION or hazard.	标识障碍物或者危险物的信标。
	beacon: identification	基准位置识别标，识别指向标	An AERONAUTICAL and/or RADIO and/or LIGHT BEACON emitting a coded SIGNAL by means of which a particular REFERENCE POINT can be identified.	一种发射编码信号的航空标或无线电信标或灯标，借助所发编码可以识别某一特定的参考点。
	beacon: light (or lighted)	NULL	A BEACON from which a LIGHT is exhibited.	NULL
	beacon: omnidirectional	全向无线电信标	See OMNIRANGE.	参见omnirange（全向导航系统）。
	beacon: radio	无线电信标	See RADIOBEACON.	参见radiobeacon（无线电指向标）。
	beacon: responder	应答信标	See TRANSPONDER BEACON.	参见transponder beacon（应答信标）。
	beacon: transponder	应答（器）信标，（应答式）无线电指向标	See TRANSPONDER BEACON.	带有应答器的信标。亦称responder beacon。
	beaconage	信标制	A system of BEACONS. See BUOYAGE.	信标系统的一种。参见buoyage（浮标）。
	beam	波束；光束	RADIANT ENERGY confined to a particular shape.	某种特定形态的辐射能。
	beam compass	长臂圆规	An instrument consisting of a beam or rod with sliding sockets that hold pencil, pen, or steel points, used together with a SCALE for plotti... more An instrument consisting of a beam or rod with sliding sockets that hold pencil, pen, or steel points, used together with a SCALE for plotting exact lengths or for drawing large circles.	一种标图仪器，它由连杆和固定铅笔、钢笔或钢针的活动套筒组成，与比例尺配合使用，可标出准确的长�... more 一种标图仪器，它由连杆和固定铅笔、钢笔或钢针的活动套筒组成，与比例尺配合使用，可标出准确的长度或画出较大的圆弧。
	beam sea	横浪	WAVES moving in a direction approximately 90° from the HEADING.	与船首向成90度方向运动的波浪。
	beam width	波束宽度	The angular measure of the transverse section of a beam (usually in the main lobe) lying within directions corresponding to specified values... more The angular measure of the transverse section of a beam (usually in the main lobe) lying within directions corresponding to specified values of field strength relative to the maximum.	在场强最大的方向内，波束（通常是主瓣）横断面的角度值。
	beam wind	横风	WIND blowing in a direction approximately 90° from the HEADING.	与船首方向成90度的风。
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