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Term | 术语 | Definition | 定义 |
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bifurcation | 分汊，分流，分支
| A division into two branches. | 指河道分为两支。 |
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bifurcation buoy | 分叉浮标，航道左右通航标
| See BUOY: BIFURCATION. | 一种特殊的侧面标，用来表示航道分叉或推荐航道的起点。 |
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bight | 海湾；冰绝湾 | A bend or curve in the COASTLINE, a bend in a RIVER, etc. In ice terminology, an extensive crescent-shaped indentation in the ICE EDGE forme... more | 海岸线的弯曲或弯入部分，以及河流等的弯曲处。
在冰的术语中，指冰的边缘因风或流的作用形成的月牙形凹进。 |
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Bilby steel tower | 毕氏钢架[标]
| A demountable and transportable TRIANGULATION TOWER for elevating a THEODOLITE and LUMINOUS SIGNALS above the GROUND, designed by J.S. Bilby... more | 一种在地面上用来抬高经纬仪和发光信号的可拆卸迁移的三角架，它由美国海岸大地测量局毕尔贝（J.S. Bilby）设计的。 |
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billow | 巨浪
| A great WAVE. | 巨大的海浪。 |
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binary | 二进制，二元
| The number system using 2 as the base for number representation. Binary numbers are composed of BITS. Generally any element capable of only ... more | 用2作为数字表示基础的数字系统。二进制数是由二进制数位构成的。一般来说，任何只有两个互不相容状态的元素都可称作二进制。 |
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binnacle | 罗经柜，罗经座
| The stand in which a COMPASS is mounted and in which lighting and compensatory units are carried. | 安装罗经的底座，上面带有照明和补偿装置。 |
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binocular(s) | 双筒望远镜
| An optical instrument consisting of a pair of TELESCOPES joined so as to be adaptable to the use of both eyes simultaneously. | 由一对望远镜连接组成的光学仪器，可同时用双眼进行观察。 |
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binocular vision | 双目视觉
| Simultaneous vision with both eyes. | 通过双眼同时观察。 |
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biology: marine | 海洋生物学
| The study of the life, history and ECOLOGY of marine and brackish water plants and animals. | 研究海洋及咸水中动、植物的生命、历史和生态的学科。 |
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bioluminescence | 生物发光
| The emission of light by living organisms. See also NOCTILUCA. | 由生物活体发出的光。亦可参见noctiluca（夜光虫）。 |
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biosphere | 生物圈
| Spherical terrestrial LAYER comprising the lower part of the ATMOSPHERE, the SEAS and the upper LAYERS of the SOIL within which living organ... more | 指地球大气层的下部、海洋以及土壤的上层所组成的一个球形层。在这个范围内生物可自然生存。 |
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bissextile year | 闰年
| See YEAR: CIVIL. | 参见civil year(民用年)。 |
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bit | 位，比特
| Short for "binary digit", the digit in binary number representation. A bit can only assume the binary values "0" and "1". A binary number re... more | 二进制位的简写，用“0”和“1”表示二进制数中的数字。类似十进制数采用十进制位表示。8个二进制位组成一个字节，它是信息理论中用于计算信息量的不可再分的基本单位。 |
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blind rollers | 长涌，滚涌
| Long, high SWELLS which have increased in HEIGHT, almost to the breaking point, as they pass over SHOALS or run in shoaling water. Called bl... more | 参见blind seas(长涌)。 |
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blind seas | （不起浪花是）长涌
，涌浪 | See BLIND ROLLERS. | 一种又长又高的涌浪（Swell），这种涌经过浅滩或浅水区时，高度增加接近碎浪点。有些地方称之为长涌（blind seas）。 |
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blind zone | 盲区，无信号区
| An area within or from which little or no radio SIGNAL is received. Also called zone of silence. | 无法收到无线电信号或收到信号非常微弱的区域。亦可称之为zone of silence（盲区）。 |
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blip | 脉冲，尖头信号
| Indication of a SIGNAL on the SCOPE of an electronic instrument, produced by a short sharply-peaked PULSE of voltage. | 电子仪器显示器上的信号指示，由电压的短峰脉冲形成。 |
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blizzard | 暴风雪
| Violent and very cold WIND which is laden with SNOW, some part, at least, of which has been raised from snow-covered GROUND. This term origi... more | 指猛烈的寒风夹着大雪，其中部分雪卷起于地面。这个术语起源于北美，后来扩展到其它国家类似的气象。 |
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block correction | 贴图
改正 | See CHARTLET. | 参见chartlet（海图小改正）。 |