变分方程组: system of variational equations病态方程组: ill-conditioned system of equations不定方程组: indeterminate equations; indeterminate system of equations差分方程组: system of difference equation超定方程组: overdetermined set等价方程组: equivalent system of equations递归方程组: recursive system对称方程组: symmetrical equations多重方程组: multiple equation system方程组的解: solution of equations方程组解: solution of equations结构方程组: set of structural equations; structural system of equations静态方程组: static equation systems联立方程组: simultaneous equations system; simultaneous system of equations; system of simultaneous equations数学方程组: mathematical system of equations随机方程组: system of stochastic equations完备方程组: complete equation system微分方程组: simultaneous differential equations线性方程组: a system of simultaneous linear equations; lineares gleichungssystem linear system of equations; system of linear equations; set of linear equation; solving linear equations; system of linear equations相关方程组: dependent equations相容方程组: consistent equations; consistent system of equations正规方程组: normal equations system; system of normal equations自激方程组: autonomous system of equations不可约方程组: irreducible system of equations; irreducible systems of equations方程自动解算装置: automatic equation solver方程组的可解性: solvability of the system of equations