quadrature
名词 n.
英 /ˈkwɒd.ɹəˌtjʊə(ɹ)/|/ˈkwɒd.ɹə.t͡ʃə(ɹ)/
美 /ˈkwɑ.dɹəˌt͡ʃʊɚ/|/ˈkwɑ.dɹə.t͡ʃɚ/
英文释义
名词 n.
- The process of making something square; squaring.
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The act or process of constructing a square that has the same area as a given plane figure, or of computing that area.
— 1976, D. T. Whiteside (editor), The Mathematical Papers of Isaac Newton, Volume 7: 1691-1695, Cambridge University Press, page 3, Craige was then on the point of publishing a short tract wherein he expounded a systematic (if far from general) 'Method of determining the quadrature of figures comprehended by straight lines and curves', there gathering a variety of techniques of rational algebraic quadrature and arc-rectification […] .
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The calculation of a definite integral by numerical means.
— 1992, Bernard Bielecki, SINC Quadratures for Cauchy Principal Value Integrals, T.O. Espelid, Alan Genz, Springer, Numerical Integration: Recent Developments, Software and Applications, page 81, Three types of SINC quadratures are surveyed for the evaluation of Cauchy principal value integrals ∫_ΓF(t)dt/(t-x), x∈Γ, where Γ is an arc in the complex plane. Under suitable assumptions on F, the quadrature errors are of order O(e), where N is the number of quadrature nodes and c is a constant independent of N.
- The act or process of solving an indefinite integral by symbolic means.
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A situation in which the directions of two celestial bodies (or a celestial body and the Sun) form a right angle from the perspective of the observer.
— When the Moon is in quadrature, it appears in the sky as a half-moon.
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The condition in which the phase angle between two alternating quantities is 90°.
— If ν_(IN) has 50% duty-cycle, then the outputs are in quadrature.
- A painting painted on a wooden panel.
词形变化
词汇关系
词源
Etymology tree
Latin quadrātūrabor.
English quadrature
Borrowed from Latin quadrātūra.
Latin quadrātūrabor.
English quadrature
Borrowed from Latin quadrātūra.
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数据来源: Wiktionary