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Term | 术语 | Definition | 定义 |
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ocean weather station | 海洋气象站 | STATION aboard a suitably equipped and staffed ship which tries to maintain a fixed maritime location and which observes and reports for i... more | 易于装在船上的观测站,其目的是保持观测站位置固定。其功能是观测和报告用于国际交换的特定要素的... more |
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octant | 八分仪
| A double-reflecting instrument for measuring angles. It is similar to a SEXTANT but has an arc of only 45°. | 双反射镜测角仪器。与六分仪类似,但其测角弧仅为45°。 |
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ocular micrometer | 目镜测微器
| See MICROMETER. | 游丝在望远镜主焦面内移动的动丝测微器。亦称eyepiecemicrometer(目镜测微计)。 |
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odograph | 计程仪
| A mechanical instrument containing a distance-measuring element which is moved or turned by an amount proportional to the actual distance ... more | 一种机械仪器,包括移动或转动量与实际运动距离成正比的测距元件,提供固定基准方向的罗盘元件,以... more |
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odometer (or hodometer) | 里程计
| An instrument for measuring the distance travelled by a craft. See also SPEEDOMETER. | 测量航行器运动距离的仪器,亦见speedometer(测速计)。 |
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oersted | 奥斯特
| The CGS unit of MAGNETIC FIELD INTENSITY in the SI system. | 国际单位制中磁场强度的CGS(厘米/克/秒)单位。 |
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offing | (从海岸可看到的)海面,海上
| That part of the visible SEA a considerable distance from the SHORE, or that part just beyond the limits of the area in which a pilot is nee... more | 可观测到的离岸一定距离的海面,或刚超出该区边缘,需引航的海面。 |
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offset | 支距
| In SURVEYING, a short line perpendicular to a surveyed line, measured to a line or point for which DATA are desired, thus locating the secon... more | 在测量中,指垂直于测线的短线,测量至所需数据的直线或点,进而可参照第一条线或点亦或测线定位第... more |
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offset lithography | 胶版印刷术,胶印
| A method of printing in which an image is transferred from a printing PLATE on to a rubber-surfaced blanket and thence on the paper. The ima... more | 将图像从印刷版转印至胶面膜,再转印到纸上的印刷方法。印刷版上的图像为正像图像。 |
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offshore | 近海的,近海地(形容词和副词) | (adj. and adv.). Away from the SHORE. | 离开海岸的。 |
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offshore | 近海(名词) | (n.). The comparatively flat zone of variable width which extends from the outer margin of the rather steeply sloping shoreface to the edge ... more | 宽度不同的较为平坦的海区,由坡度陡峭的岸面外缘延伸至大陆架边缘。 |
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offshore navigation | 近海航行
| See NAVIGATION. | 在离岸一定距离的区域航行,区别于coastwise navigation(沿岸航行)。 |
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offshore wind | 离岸风
| WIND blowing from the LAND toward the SEA. See LAND BREEZE. | 由陆地吹向海洋的风,参见land breeze(陆风)。 |
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off soundings | 深于100英寻水域的航船
| Said of a vessel navigating beyond the 100-FATHOM LINE. In earlier times, said of a vessel in water deeper than could be sounded with the HA... more | 指在超过100英寻等深线航行的船舶。早期指在手持测锤无法测及的深度航行的船舶。 |
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ohm | 欧姆
| The unit of electrical resistance in the SI system. | 电阻的国际单位。 |
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oil field | 油田
| An area in which oil occurs in quantities worthy of exploitation. | 存贮大量石油,具开采价值的区域。 |
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old ice | 多年冰
| Any SEA ICE more than 1 year old. | 任何长于1年的海冰。 |
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omnibearing | 全向方位
| The MAGNETIC BEARING of an OMNIRANGE. | 全向导航系统的磁方位。 |
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omnidirectional antenna | 全向天线
| See ANTENNA. | 在水平方向灵敏度基本相同,在垂直方向具方向性的天线。 |
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omnidirectional beacon | 全向无线电信标
| See OMNIRANGE. | 参见omnirange(全向导航系统)。 |