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Term | 术语 | Definition | 定义 |
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index mirror | 六分仪动镜
| The MIRROR attached to the INDEX ARM of a MARINE SEXTANT. Also called index glass. | 附属在航海六分仪指臂上的反射镜。也可称为index glass。 |
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index of refraction | 折射率
| See REFRACTION: INDEX OF. | 入射角的正弦值和折射角正弦值的比率。 |
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index shade | 遮光镜
| On a SEXTANT, one of the pivoting coloured glasses which can be swung before the INDEX MIRROR for reducing the glare of the SUN. | 六分仪上的在枢轴上旋转的有色镜的一种,其能绕轴心在六分仪动镜前旋转,以减少强烈太阳光的强度。 |
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Indian spring low water | 印度平均大潮低潮面
| An arbitrary TIDAL DATUM approximating the LEVEL of the mean of the LOWER LOW WATER at SPRING TIDES. It was first used in waters surrounding... more | 一种独立的潮汐基准面,在朔望大潮时,近似于低低潮的平均海水面。它首先应用于印度周围的水域,也... more |
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Indian tide plane | 印度潮汐基准面
| See INDIAN SPRING LOW WATER. | 见indian spring low water(印度平均大潮低潮面)。 |
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indicator | 指示器,显示器
| That part of electronic equipment in which the DATA obtained by the RECEIVER is presented for visual OBSERVATION. This is usually in the for... more | 电子设备的一部分,它能使接收机获取的数据以可视形式显示出来。通常以显示器或刻度盘形式。 |
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indirect levelling | 间接水准测量
| See LEVELLING. | 使用下列方法测定高程差:(a)三角高程测量中用根据垂直角和水平距离;(b)气压高程测量用气压计测... more |
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indirect wave | 间接波
| See WAVE. | 由于折射或者反射造成传播方向发生急剧变化,而由间接路径传播的任意一种波。参见sky wave(天波)。 |
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induced magnetism | 感生磁性
| See MAGNETISM. | 一块磁性材料在磁场中获得的磁力。 |
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inequality | 不等,均差
| A systematic departure from the mean value of a quantity. See ANNUAL INEQUALITY, DIURNAL INEQUALITY, LUNAR INEQUALITY, PARALLAX INEQUALITY... more | 相对于某一量平均值的系统性偏离。参见annual inequality(周年不等)、diurnal inequality(日潮不等)、lunar ine... more |
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inertia: gyroscopic | 陀螺惯性,回转惯性
| See GYROSCOPIC INERTIA. | 阻止任何外力改变其转动轴的陀螺特性。陀螺倾向于保持它的转动轴方向不变。 |
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inertial navigation | 惯性导航
| See NAVIGATION. | 由某一设备自动完成的船位推测,该设备自离开起始点即通过计算加速度的二重积分给出连续的船位。 |
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inferior conjunction | 下合
| See CONJUNCTION. | 当内行星处于地球和太阳之间(成一条直线)时,内行星和太阳的合。 |
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inferior mirage | 下现蜃景
| See MIRAGE. | 海市蜃楼的异常情况,由于暴晒的酷热,发生在延展水域、陆地、海岸和道路等处的上空,物体虚像出现... more |
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inferior planet (s) | 内行星
| See PLANET (S): INFERIOR. | 其轨道小于地球轨道的行星(在地球轨道之内):水星和金星。 |
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inferior transit | 下中天
| See MERIDIAN TRANSIT. | 参见meridian transit(中天)。 |
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infrared | 红外线的
| (adj.). Having a FREQUENCY immediately beyond the red end of the visible SPECTRUM said of RAYS of longer WAVE LENGTH than visible light, but... more | (形容词)。其频率紧临可见光谱红光边缘外侧的射线,也就是说它的波长比可见光要长,但比无线电波... more |
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infrasonic | 亚声的,次声的
| (adj.). Having a FREQUENCY below the audible RANGE. | (形容词)。其频率低于可听音域频率的。 |
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ingoing stream | 进潮流,涨潮流
| See FLOOD STREAM. | 参见flood stream(涨潮流)。 |
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initial great circle course | 初始大圆航向
| See COURSE: GREAT CIRCLE. | 参见great circle course(大圆航向)。 |