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Term | 术语 | Definition | 定义 |
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inversion layer | 逆温层
| Atmospheric LAYER, horizontal or approximately so, in which the temperature increases with increasing HEIGHT. See TEMPERATURE INVERSION. | 水平的或者近似水平的大气层。在该大气层中，温度随高度增加而增加。参见temperature inversion（逆温）。 |
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inverted compass | 倒置罗经
| See COMPASS: HANGING. | 参见hanging compass（悬挂式罗经）。 |
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inverted image | 倒像
| See IMAGE. | 相对物体颠倒显示的图像。 |
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inverting eyepiece | 倒像目镜
| See EYEPIECE: ERECTING. | 参见erecting eyepiece（正像目镜）。 |
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ionosphere | 电离层
| That part of the ATMOSPHERE, extending from about 70 to 500 km, in which ions and free electrons exist in sufficient quantities to reflect... more | 大气层的一部分，其范围大约70-500公里，在电离层中存在足够的离子和自由电子反射电磁波。 |
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ionospheric disturbance | 电离层扰动
| A sudden outburst of ultraviolet light on the sun, known as a Solar Flare, which produces abnormally high ionization in the region of th... more | 太阳表面紫外线辐射突然爆发，即众所周知的太阳耀斑，会在D层区域产生异常地高电离化，结果导致其对... more |
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ionospheric storm | 电离层风暴
| Violent changes in the state of the IONOSPHERE. | 电离层状态的剧烈变化。 |
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ionospheric wave | 电离层波，天波
| See WAVE: SKY. | 参见sky wave（天波）。 |
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ironbound | 坚硬的，岩石围绕的
| (adj.). Said of a rugged, rocky COAST which affords no ANCHORAGE. | (形容词)。形容多坚固岩石的海岸，无法进行锚泊。 |
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irradiance (at a point of a surface) | 辐照度，辐照率（表面上一个点的）
| Quotient of the FLUX of RADIATION incident on an infinitesimal element of surface containing the point under consideration, by the area of t... more | 通过包含所研究的点的表面微元的辐射通量除以该微元的面积的商。 |
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irradiation (at a point of a surface) | 辐照度，光渗（表面上一个点的）
| Product of an IRRADIANCE and its duration. | 辐照度和它持续时间的乘积。 |
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irregular error | 偶然误差
| See ERROR: ACCIDENTAL. | 参见accidental error（偶然误差）。 |
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island | 岛
| A piece of LAND completely surrounded by water. | 完全被水围绕的一块陆地。 |
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island harbour | 岛港，岛式港口
| See under HARBOUR. | 由岛屿构成或主要被岛屿防护的港口。 |
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island shelf | 岛架
| See CONTINENTAL SHELF. | 邻接大陆（或环绕岛屿）的地带,由低潮线延伸至坡度显著增加的深水处。参见shelf（陆架）。 |
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island slope | NULL | See CONTINENTAL SLOPE. | NULL |
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isle | 小岛
| An ISLAND. Now more usually applied to an ISLAND of smaller size, except in established appellation, as the 'British Isles'. | 岛屿的一种，除像不列颠群岛等已命名的岛屿之外，目前更多用于面积较小的岛。 |
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islet | 小岛，屿
| A small ISLAND. | 比较小的小岛。 |
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isobar | 等压线
| Line joining points of equal pressure on a given surface (level surface, vertical cross section, etc.). | 在给定的表面（水平面、垂直截面等）上压力相等的点的连线。 |
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isobath | 等深线
| See DEPTH CURVE, FATHOM LINE. | 参见depth curve（等深线），fathom line（等深线）。 |