例句與造句

1. A " plansifter " was " a stack of sieves of decreasing mesh size that separate particles by size " for use in milling operations.
2. The speed of convergence of multigrid and domain decomposition methods for elliptic partial differential equations without a coarse problem deteriorates with decreasing mesh step ( or decreasing element size, or increasing number of subdomains or substructures ), thus making a coarse problem necessary for a scalable algorithm.
3. It's difficult to find decreasing mesh in a sentence. 用decreasing mesh造句挺難的