... Doppelreihe double series 二重级数 Doppelverhaeltnis double cross ratio; cross ratio 双交比;交比 Drehachse rotation axis 旋转轴 ...
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zero cross ratio 过零率
Doppelverhaeltnis double cross ratio 双交比
equianharmonic cross ratio [数] 等交比
zero-cross ratio 过零率
cross-ratio invariant 交比不变量
cross-ratio invariability 交比不变性
Real Cross Ratio Lemma 实交比值引理
The cross ratio he called anharmonic ratio.
他把交比叫作非调和比。
The cross ratio he called anharmonic ratio .
他把交比叫作非调和比。
Cross ratio and element at infinity are two important concepts with projective geometry and primary tools in considerate projective property of figures.
交比和无穷远元素是射影几何中的两个重要概念，它们是探讨图形射影性质的主要工具。
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