Where displaced people have an established method of covering latrines (for example, with a wooden lattice) this is generally to be preferred, even if it is less easy to clean than a special plate.
即使没有固定板材好打扫，灾民们多数有固定的方法来覆盖厕所，例如：用木格子。
2
The superconvergence of an improved vortex lattice method for a two-dimensional flat plate has been verified theoretically.
本文就二维平板从理论上证明了改进涡格法的超收敛性。
3
The folded plate latticed shell is a new type of lattice space structure, having merits of both folded plates and spatial lattice structures.