详细解释:n. 求面积, 正交, 弦
【计】 正交
英语解释：
名词 quadrature:
the construction of a square having the same area as some other figure详细解释：
quad.ra.ture
n.（名词）The process of making something square.使某物成方形的过程Mathematics The process of constructing a square equal in area to a given surface.【数学】 求面积：画一个与所给平面面积相等的四方形的过程Astronomy A configuration in which the position of one celestial body is 90= from another celestial body, as measured from a third.【天文学】 方照：一种布局，其中某天体的位置与另一天体成90度，如从第三天体测量