It is located on a rotary crank on a crank-balanced pumper and can also be located on the walking beam on the end opposite the well on a beam balanced pumper.
在曲柄平衡抽油机上平衡块位于旋转的曲柄上，而在游梁平衡抽油机上平衡块位于井的相对一端的游梁上。
2
A rotary table helps to optimize the beam incidence Angle.
一张旋转的桌子有助于将光线影响之方式角最佳化。
3
The paper makes analysis to lower bracket of rotary crusher on its inner force by regular equation of beam bend, on basis of which strength of lower bracket can be calculated.