词汇	try and error
释义	try and error 逐次逼近
随便看	nonsingular m-matrix nonsingular M-matrix Nonsingular M-matrix non-singular M-matrix nonsingular module nonsingular network non-singular network nonsingular normal distribution nonsingular operator nonsingular orbit elements nonsingular perturbation nonsingular point non-singular point nonsingular quadric nonsingular quadric surface Nonsingular quartic moment problem nonsingular rings non-singulars nonsingular scattering nonsingular set nonsingular set type nonsingular square matrix nonsingular surface non-singular term non-singular terminal