- n.
1.八分圓；八分區(qū)；卦限；八分儀；【植物；植物學(xué)】八分體。
2.【天文學(xué)】相對(duì)兩天體成四十五度的位置。
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octant中文什么意思
例句與用法
- Early introduction and studies on the western double reflecting octant in china
中國(guó)早期對(duì)西方雙反射八分儀的介紹和研究 - In each iteration , no trigonometric function is used and only two multiplications are required . by taking the advantage of symmetry , only the points in one octant are need to be generated
該算法避免三角函數(shù)的運(yùn)算，每步僅需兩次乘法，并且充分利用對(duì)稱性只計(jì)算一個(gè)八分象限的點(diǎn)。 - The three axes determine three planes , the - , - and - plane . which divide space into eight octants . to each pointin space corresponds an ordered triple of numbers . its cartesian coordinates , which measure its directed distances from the three planes
三個(gè)坐標(biāo)決定三個(gè)坐標(biāo)面,面,面,面,這些坐標(biāo)面將空間分成八個(gè)卦限,空間中點(diǎn)每個(gè)點(diǎn)都對(duì)應(yīng)一個(gè)有序三元組和分別表示點(diǎn)到三個(gè)坐標(biāo)面的有向距離
英文釋義
名詞- a measuring instrument for measuring angles to a celestial body; similar to a sextant but with 45 degree calibration