Through field application of decentralized gas anchor,the results show that average pump efficiency is high up 52.
偏心气锚是一种用于提高有杆泵泵效的高效气体分离工具 ,它突破了常规气锚在气锚内进行分气的原理 ,而利用油套环空作为主要分气空间 ,经现场应用 ,平均泵效达 5 2 。
4 BF at Pan Gang since May, 1994,which to a celtain degree achieved a more smooth operation of BF, improved the gas permeability of central stock column, developed central gas flow, leduced the times of fueling obviously, decreased coke ratio,achieved a certain effect on improvement of various technological economical targets.
攀钢4号高炉从1994年5月开始采用中心加焦技术，在一定程度上改革了高炉顺行，改善了中心料柱的透气性，发展了中心气流，悬料次数明显减少，焦比明显降低，对改善各项技术经济指标取得了一定效果。
Echocardiography evaluation about the heart function change on rat models of heart-Qi deficiency syndrome;
心气虚证大鼠模型心功能变化的超声评价