向后差分算子 [数] backward difference operator

向后差分法 backward differentiation formula

后向差分 [数] backward difference ; ascending difference

后向差分算子 [数] backward difference operator

后向差分法 [数] backward difference method ; backward differentitaion method

后向差分近似法 backward difference approximation

后向差分隐式法 backward difference implicit

后向差分方程 backward difference equation

所用的后向差分公式 Backward differentiation formulas ; BDF