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李约瑟之谜
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李约瑟之谜
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the Needham puzzle
李约瑟之谜
20世纪英国科学史家和生物化学家J.李约瑟(Joseph Needham,1900-12-09~1995-03-24)在研究中国古代文化过程中提出的问题。又称李约瑟难题。
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pole of a quadratic differential
pole of a quadric hypersurface
pole of a quadric surface
pole of a Riemannian manifold
pole of a rolling curve
pole of a sphere
pole of a system
pole of a system of coordinates
pole of figure
pole of first order
pole of orbit
pole of order n
pole of projection
pole of rotation
pole of the ecliptic
pole of the equator
pole of the hyperplane
pole-on
pole on a ball
pole-on object
pole-on star
pole orbit
pole placement
pole placement self-tuning regulator
Poles
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