adj.四乘冪的；四次的

n.四乘冪；四次方程式

That leads to biquadratic equations for solution. 它們又引出待解的雙二次方程。

The global topological structure of the homogeneous biquadratic systems is discussed and thier coefficient conditions are given. 討論了一類齊四次系統(tǒng)的全局結(jié)構(gòu)，并給出了它們的系數(shù)條件。

Parametric biquadratic equation whose roots are characteristic wave numbers is obtained after setting the determinant of eigen matrix to zero. 特征波數(shù)的計算涉及到張量運算、矩陣運算、公式化簡等。

The approximation of the parabolic integro-differential equations is studied with anisotropic biquadratic finite element. 摘要研究具有各向異性特征的雙二次元對拋物積分微分方程進行了逼近。

In this paper, the approximation of the second order parabolic equation is studied with the anisotropic biquadratic element. 摘要本文研究具有各向異性特征的雙二次元對二階拋物方程的逼近。