The filter operation optimization and technical transform of the wax deoiling unit in Daqing Refinery was introduced. 介绍了大庆炼油厂蜡脱油装置过滤机操作的优化及技术改造。
The method for the design and calcullation of the steel belt for a steel-belt ultralong stroke pumping unit is expounded summarily. 综述了钢带式超长冲程抽油装置用钢带的设计计算方法。
