Air Transportation, Transportation Demand Analysis, Transportation Planning, Transportation Management, Decision Making Analysis, Network Analysis.

航空运输, 运输需求分析, 运输规划, 运输管理, 决策理论分析, 路网分析.

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Second, a significant slowdown in industrial production, raw material prices and transportation demand.

二是工业生产显著放缓, 原材料价格和运输市场需求下降.

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