例句與造句

1. for solving the corresponding discretization equation, there are few re-sults on the construction of efficient solvers . most existing results only presented the related error estimate for a concrete problem discretized by covolume methods . in this paper, hierarchical basis method, domain decomposition method and precondtioned gmres method are constructed
   并且大部分已有研究結(jié)果均集中于給出對(duì)某一具體問(wèn)題用有限體積法離散后的誤差估計(jì)，而對(duì)于如何高效求解其離散方程，這一無(wú)論從理論上講，還是從實(shí)際應(yīng)用角度出發(fā)都具有重要意義和巨大實(shí)用價(jià)值的問(wèn)題，目前這方面的研究結(jié)果還很少。
2. It's difficult to find hierarchical basis in a sentence. 用hierarchical basis造句挺難的