前后墙对冲布置
front and back wall cross collocation
前后墙对冲锅炉
opposed wall firing boiler
前后墙布置燃烧器
front and back wall fired burner
后相关滤波器
post-correlation filtering
后向错误更正
backward error correction
后向光散射
light backward scattering
后向神经网络
back propagation(BP)neural network