Downhole equipment for petroleum and natural gas industries - progressing cavity pump systems for artificial lift - pumps 石油和天然气工业的钻孔设备.人工提升用步进式空腔泵系统.泵
Simulation results indicate that the speed of “ step algorithm ” is greatly increased which benefits from the two modifications 仿真结果显示,以上两个改进都进一步提高了步进式算法的速度。
However , recurrent kaufman formula used to compute call blocking probabilities ( cbps ) of virtual paths in “ step algorithm ” is time - consuming 然而,步进式算法中用来计算虚路径上的呼叫损失率的kaufman迭代公式非常的耗时。
In addition , in reference document , a mathematic justification verifying the optimality of “ step algorithm ” is proposed . however , it seems a bit complex 另外,在参考文献中,有一个较复杂的证明步进式算法最优性的数学证明。
The working principle , design features and advantages and disadvantages of ball type and tooth type steppiing paraffin removal units are introduced 介绍了球1型、球2型、齿2 1型和齿4型步进式清蜡器的工作原理、结构特点及优缺点。
Abstract : the working principle , design features and advantages and disadvantages of ball type and tooth type steppiing paraffin removal units are introduced 文摘:介绍了球1型、球2型、齿2 1型和齿4型步进式清蜡器的工作原理、结构特点及优缺点。
The sample industrial controller of pcc step - type hydraulic governor using this method is proved to be successful by practical operation in hydropower stations 在此基础上，研究和开发了基于可编程计算机控制器( pcc )的步进式水轮机调速器工业样机并在电站运行中取得了圆满成功。
Also , one step in “ step algorithm ” , which takes off one unit of bandwidth away from the virtual path with lowest cbp in the whole network , is explained to be immoderate 同时,对步进式算法中的一步:对全网中呼叫损失率最小的虚路径做带宽减一操作,本文解释了这个步骤的不合理性。
