The test results, design parameters and application effect of the long distance gravity transportation of copper concentrate at Dashan Concentrator, Dexing Copper Mine are presented.
介绍了德兴铜矿大山选矿厂铜精矿远距离自流输送的试验结果、设计参数选择及应用效果。
The essay discusses and concludes the transportation process of dust collected by gravity precipitator and dry type deduster during ironmaking by means of pneumatic conveying through pipeline.
前言：对利用管道气力输送原理和吸排车运输炼铁重力除尘和干法除尘灰的工艺进行讨论与总结。
The paper puts forward an improved method on the basis of gravity model to forecast the od freight volume of railway luggage and parcel transportation.
对铁路行包od运量的预测提出一种基于重力模型的改进方法。
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