1.Using the relationship between Riesz-Feller,Riemann-Liouville and Grünwald-Letnikov fractional-order derivatives,and discretizing Riesz-Feller fractional-order derivative by the definition of Grünwald-Letnikov,a two-level finite difference scheme was proposed for approximating the Lévy-Feller advection-dispersion equation.
利用Riesz-Feller,Riemann-Li-ouville和Grünwald-Letnikov分数阶导数之间的关系,按照Grünwald-Letnikov定义对Riesz-Feller分数阶导数进行离散,得到了近似Lévy-Feller对流-扩散方程的一种两层的有限差分格式.
2.Yea, the fir trees rejoice at thee, and the cedars of Lebanon, saying, Since thou art laid down, no feller is come up against us.
8松树和黎巴嫩的香柏树，都因你欢乐，说，自从你仆倒，再无人上来砍伐我们。
3.All right, you remember that, young feller-me-lad.
好吧，你记住这一点，好小子。
4.Tell me, Joe -- honest, now, old feller -- did I do it?
告诉我，乔，伙计，说老实话，是我干的吗？
