论文部分内容阅读
申请号:90201700.4 申请日:1990年2月15日申请人:西安石油学院说明书摘要:本实用新型提供的一种游梁式抽油机的加载装置,以计算机控制的伺服油缸作为载
Application number: 90201700.4 Date of application: February 15, 1990 Applicant: Specification of Xi’an Petroleum Institute Abstract: The utility model provides a loading device of a beam pumping unit, which is controlled by a computer controlled servo cylinder