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Term | 术语 | Definition | 定义 |
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celestial globe | 天球仪
| See STAR GLOBE. | 参见star globe(星球仪)。 |
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celestial horizon | 地心真地平,天球地平圈
| See HORIZON. | 天球上的圈,由天球和过地球中心并且垂直于天顶/天底线的一个平面相截而形成。也称作天球地平圈。 |
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celestial latitude | 黄纬
| See LATITUDE. | 黄道北或南的角距离。黄道与天球上某一点之间的纬圈圆弧。从黄道向北或向南测量90°,采用N或S表示测... more |
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celestial line of position | 天文位置线
| A LINE OF POSITION determined by means of one CELESTIAL BODY. | 测量天体确定的位置线。 |
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celestial longitude | 黄经
| See LONGITUDE. | 沿黄道春分点向东的角距离。春分点的纬度圈与天球上一点的纬度圈之间的黄极角度或黄道弧,从春分点... more |
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celestial meridian | 天球子午圈,赤经圈
| See MERIDIAN. | 通过天体天极和天顶的大圆。该术语通常指上半子午圈(Upper branch)。 |
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celestial navigation | 天文导航,天文航海
| See NAVIGATION. | 在天体辅助下开展的导航。亦称作astro-navigation(天文导航)。 |
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celestial pole | 黄极,天极
| See POLE. | 天球与地轴延长线的两个交汇点。通过标注N或S指示是北天极还是南天极。 |
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celestial sphere | 天球
| An imaginary sphere of infinite radius, concentric with the EARTH, on which CELESTIAL BODIES are imagined to be projected. Also called celes... more | 以地球为中心,以无限长为半径的假想球,假想所有天体都被投影到该球面上。也称作celestial concave(天穹... more |
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cellular wave | 局部表面波
,微波,泡状波 | See WAVE. | 水的振荡受固体边界约束的表面波系统,其周期与相邻波相同。 |
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Celsius temperature scale | 摄氏温标
| A thermodynamic scale of temperature (t°C) defined as a function of the KELVIN TEMPERATURE SCALE (T°K) by the relationship t°C = T°K 273... more | 温度的热力尺度 (表为t℃),定义为开尔文温标(表为T°K)的函数,关系式为:t°C = T°K 273.15。以于1742年首次... more |
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centering (or centring) | 对中
| The placing of an instrument with its VERTICAL AXIS in the VERTICAL through the ground mark. The setting of LENSES of an optical instrument... more | 整置测量仪器,使其垂直轴处于地上标志点的铅垂线位置。调整光学仪器的各个透镜,使它们的光轴在一... more |
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centigrade temperature scale | 摄氏温度,百分温度
| See CELSIUS TEMPERATURE SCALE. | 参见celsius temperature scale(摄氏温标)。 |
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centimetre-gram-second (CGS) system | 厘米·克·秒制
| The system of physical units in which the fundamental units of length, mass and TIME are the centimetre, GRAM and SECOND, respectively. | 长度、重量、时间的基本单位,分别是厘米、克、秒。 |
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central meridian | 中央子午线
| See MERIDIAN: INITIAL. | 参见initial meridian(起始子午线,首子午线)。 |
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central processing unit (CPU) | 中央处理器
| In computers in general the unit that comprises the arithmetic logic unit and the control unit. | 在计算机中包括运算逻辑和控制单元的通用单元。 |
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centre: reduction to | NULL | See REDUCTION. | NULL |
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centre of buoyancy | 浮心
| See BUOYANCY. | 浮体所排出液体的重心位置。 |
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centre of gravity | 重心
| See GRAVITY. | 可以认为是集中整个物体质量的一个点。 |
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centrifugal force | 离心力
| The force with which a body moving under constraint along a curved PATH reacts to the constraint. Equal and opposite to the CENTRIPETAL FORC... more | 一个物体在约束下沿着弯曲路径运动时,对其约束力的反作用力。其与向心力大小相同,方向相反。 |