常見例句雙語例句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期光束擴展半徑表達式。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臨界切除時間。Having adopted the quadratic approximation of potential, we can solve the equation and get the approximately analytical solutions of Gaussian typed breath mode.對勢函數(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。 返回 quadratic approximation