管理运筹学
managerial operations research
management operational research
经济运筹学
economic operation research
军事运筹学
military operations research
military operational research
Operations research
Mor
模糊运筹学
fuzzy operational research
软运筹学
soft operations ressearch
随机运筹学
Stochastic operations research
randomized operational research
运筹学模型
OR model
operational research model
运筹学史
history of operational research
运筹学学报
operations research transactions
运筹学学科建设
discipline construction of military operations research
运筹学与控制论
operational research and cybernetics
operations research and cybernetics
氮肥运筹
nitrogen application model
Nitrogen fertilizer strategy
N-fertilizer management
nitrogen dressing ratio
nitrogen strategies
nitrogen fertilization
N-fertilizer application
Nitrogen application technique
nitrogen management
nitrogen fertilizer management
Nitrogen application strategies
Nitrogen fertilizer application
nitrogen management practices
Nitrogen strategy
N fertilization method
Nitrogen application
nitrogen application ratio
Application of Nitrogen fertilizer
Nitrogen application types
methods of nitrogen fertilizer application