quadratic approximation

基本解釋

The expression of the long-term optical-beam spreading radius is obtained by a quadratic approximation.
通過二次方近似得到了長(zhǎng)期光束擴(kuò)展半徑表達(dá)式。
The CCT is determined by the crossing point of the quadratic approximation surface and the continuous faulted trajectory.
基于故障后電力系統(tǒng)穩(wěn)定域邊界的二次近似來估計(jì)臨界切除時(shí)間。
Having adopted the quadratic approximation of potential, we can solve the equation and get the approximately analytical solutions of Gaussian typed breath mode.
對(duì)勢(shì)函數(shù)采用二階近似后，求解此方程得到高斯型呼吸模式的光束寬度的近似解析式。