quadratic 专八

When the coefficients of quadratic equations were irrational numbers, Abu Kdmil abandoned the geometry demonstration showing the trend of arithmetization.

而且，当遇到具无理系数方程时，作者放弃了几何证明，具有明显算术化趋势。

The coma aberation and astigmation are rec t ified through carefully selecting the position of aperture stop and the paramete rs of the quadratic surface.

仔细选取系统光阑位置，选取次面系数及次面位置，可以校正系统参差及像散。

To improve the robustness of the Minimum Variance Distortionless Response (MVDR) beamforming to the array steering vector, a quadratic constraint method is proposed.

提出了一种基于阵列指向性次型约束优化算法，以提高最小方差无畸变响应（MVDR）波束形成对方向矢量稳健性。

Based on the geochemical data of the long regional profile in western Jiangxi and using quadratic arithmetic average and correlation analysis,orebearing features of strata are discussed in this paper.

本文以赣西地区区域长剖面地球化学测量数据为基础，运用次算术平及相关分析方法，探讨了地层含矿性。