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单词 quadrature
释义 quad·ra·ture
\ˈkwädrəchə(r), -rəˌchu̇(ə)r, -ˌchu̇ə sometimes ˈkwȯd-\ noun
(-s)
Etymology: Latin quadratura act of making square, from quadratus (past participle of quadrare to square) + -ura -ure — more at quadrate
1. obsolete : square shape; also : something (as a place or region) square in shape : square, squareness
2.
 a. : the act or process of making square or of determining areas; specifically : quadrature of the circle
 b. : the process of evaluating integrals
3.
 a. : a configuration in which two celestial bodies have a separation of 90 degrees
  < the first quarter moon is in quadrature to the sun >
 b. : either of two points on an orbit in a middle position between the syzygies
4.
 a. : a phase difference of one quarter cycle (as that between the currents in a two-phase power-distribution system)
 b. : the angular distance between two points on an armature winding separated by one half the pole pitch or 90 electrical degrees
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更新时间:2025/3/17 17:34:34