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Term | 术语 | Definition | 定义 |
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isomagnetic line | 等磁力线
| A line connecting points of equality in some MAGNETIC ELEMENT. | 将一些磁力要素相等的点连接起来的线。 |
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isometric | 等量的
| (adj.). Of or pertaining to equal measure. | 形容词。相同度量的或与相同度量有关的。 |
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isometric latitude | 等量纬度
| See LATITUDE. | 一种辅助纬度,用于表示椭球在球面上的等角映射。 |
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isometric parallel | 等比线;等量纬圈 | See PARALLEL. | 在摄影测量学中,指像片平面与到相同透视中心具有相同垂直距离的水平面的交线。 |
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isopleth | 等值线
| An ISOGRAM of equal or constant value of a given quantity, with respect to either time or space. | 在时间或空间方面,某一给定的量具有相等或恒定值的曲线。 |
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isopor | 地磁等年变线 | See ISOPORIC LINE. | 参见isoporic line(地磁等年变线)。 |
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isoporic line | 地磁等年变线 | A line connecting points of equal annual rate of change of a MAGNETIC ELEMENT. Also called isopor. | 磁力要素周年变化率相等点的连线,亦称isopor(地磁等年变线)。 |
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isopycnic | 等密度的 | (adj.). Of or pertaining to equal density. | (形容词)。密度相等的或与相等密度有关的。 |
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isopycnic | 等密度线 | (n.). See ISOPYCNIC LINE. | (名词)。参见isopycnic line(地磁等年变线)。 |
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isopycnic line | 等密度线
| A line connecting points of equal density. Also called isopycnic. | 密度相等点的连线,亦称isopycnic(等密度线)。 |
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isoradial | 等角点辐射线
| A RADIAL from the ISOCENTRE. | 由等角点发出的辐射线。 |
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isostasy | 均衡,地壳均衡
| A condition of approximate EQUILIBRIUM in the outer part of the EARTH, such that the gravitational effect of masses extending above the su... more | 地球外表层的一种近乎平衡状况。在此状态下,大陆区域大地水准面以上的质量的重力效应近似地补偿其物质材料密度的不足,而在海洋中水密度的不足的重力效应则以海洋密度的超量来补偿。 |
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isostatic anomaly | 均衡异常
| The difference between an observed value of GRAVITY and a theoretical value at the point of OBSERVATION which has been corrected for ELEVATI... more | 观测点重力观测值与理论值之差。观测点已经进行过测站到大地水准面的高程改正,以及整个地球的地形效应改正和均衡补偿改正。 |
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isotherm | 等温线
| In METEOROLOGY, the line which is the locus of points which have the same value of air temperature. | 在气象学中,指空气温度值相同的各点连成的线。 |
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isothermal (or isothermic) | 等温的
| (adj.). Of or relating to equal temperature. | (形容词)。温度相等的或与等温相关的。 |
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isotope | 同位素
| Two or more nuclides having the same atomic number, hence constituting the same element, but differing in mass number. | 具有相同原子量的两个或两个以上核素,它们构成相同的元素,但是质量不同。 |
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isotropic (or isotropus) | 各向同性的,同质的
| (adj.). Having the same physical properties in all directions. | (形容词)。在所有方向上物理性质相同的。 |
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isthmus | 地峡
| A narrow strip of LAND connecting two larger bodies of LAND. | 连接两块较大陆地的狭窄条状陆地。 |
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jack-up rig | 自升式钻井平台
| A rig which provides a stable drilling structure in shallow waters by extending supporting legs onto the seabed. The legs are retracted when... more | 一种钻井装置,它可延伸支架到海底,从而为在浅水区域钻井提供了稳定的钻井结构。当它被拖曳时其支架是收缩的。 |
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jellyfish | 水母,海蜇
| Any of various free-swimming COELENTERATES having a disc- or bell-shaped body of jellylike consistency. Many have long tentacles with nemat... more | 具有盘形或钟形的胶状体身体且可自由游动的腔肠动物。大多数的水母具有很长的带刺丝(刺细胞)的触角,还有些水母能发球形的冷光。胶状自由浮动的有机物。术语“胶状”常用于栉水母,也可指某些被囊动物。也称为medusa。 |