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单词 octant
释义 octant['ɒktənt]n. 八分圆, 八分仪, (天体与另一天体)成45度的视角位置【医】 八分体 octant  oc.tant  AHD:  [¼k“t…nt] D.J.  [6Kkt*nt]K.K.  [6$kt*nt]n.(名词)1. One eighth of a circle.八分圆:圆的八分之一2. A 45&9{=} arc.45°弧3. The area enclosed by two radii at a 45&9{=} angle and the intersected arc.八分圆:一个被两条成45°角的半径及与之相交的弧所包围的区域4. An instrument based on the principle of the sextant but employing only a 45&9{=} angle, used as an aid in navigation.八分仪:以六分仪的规则为基础设计的一种仪器,但只采用45°角,用来帮助航海5. Astronomy The position of a celestial body when it is separated from another by a 45&9{=} angle.【天文学】 八分圆:一个天体当它成45°角与另一天体分离时所处的位置6. One of eight parts into which three-dimensional space is divided by three usually perpendicular coordinate planes.卦限:八个区之一,这八个区是由三个正交平分割三维空间而成语源:1. Latin oct³ns  octant- 拉丁语 oct³ns  octant- 2. from oct½ [eight] * see  okt½(u) 源自 oct½ [八] *参见 okt½(u) 继承用法:octan“tal  AHD:  [¼k-t²n“t…l] (形容词)
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