回归正交试验试验
regression-orthogonal design
~+多层多目标决策
Multilevel and multiobjective decision making
导流管多层流化床
multistage fluidized bed with draft tube
多层层积处理
Multilayer bedding treatment
多层多导体系统
multilayed multiconductor system
多层多道焊
multi-cover and multi-path welding
Multi-layer Welding
multi-pass welding
多层多股
multi-lever and multi-strand
多层多孔三维结构
porous three-dimensional structure of multi-storey
多层多跨
multi-story and multi-span