oundary constraint 边界约束

grai oundary 晶体界面

fictitiou oundary 假想边界

nonhomogeneou oundary 非齐次边界

tra oundary movement 越境转移

OUNDARY FREE SURROUND 无边折环技术

tra oundary waters 越界水域 ; 跨越国界水域

oundary value problem 边界值问题

tra oundary air pollution 越界空气污染

free reflecting b oundary 自由反射界面