Based on the analysis and the characteristics of timber transportation, the mixedtransportation model was built with nonstop and secondary transportation.
在分析木材运输过程的基础上，结合木材运输的特点，建立了木材直达、中转混合运输问题的数学模型。
2
The experimental and theoretic study of pigging operation of mixedtransportation pipeline has important signification for the design and management of mixedtransportation pipeline.
混输管路清管操作实验和理论的研究对混输管线的设计及生产管理具有重要意义。
3
According to the characteristics of the oil-gas-water mixedtransportation, flow model method is used to solve technological calculation problems of the oil-gas-water mixedtransportation.