equation system造句怎么写

The existence of weak solutions for a class of elliptic equation systems is studied by using the weakly continuous method which was introduced by professor Ma Tian.

The standard singular point is an important structure of the differential-algebraic equation systems( DAEs), by which DAEs are differentiated from the ordinary different equation systems( ODEs).

By means of a three vector equation system, the correlative equations of the undetermined parameters are thus deduced when the small disturbance theory is applied to multiple blade rows.

The initial problem for second order linear evolution equation systems is discussed by using the contraction semigroup theory.