General beam pumping system should be the overall efficiency of about 50% if less than this should improve its performance.
一般游梁式抽油系统的总效率应为50%左右，若低于此应提高其性能。
2
In this article, it will be possible to cover little more than the major considerations, so the aim is at putting the overall considerations into perspective, beginning with the beam loadings.
在这篇文章中，将有可能支付多一点的主要因素，因此，其目的是在把整体的角度考虑，首先是梁装船。
3
A design method on level swing beam disc plough was put forward by designing and calculating of level swing beam mechanism, side force balance mechanism and overall parameters.