或由于钢杆变形根本就上下活动不自由。

Or simply because the upper and lower steel bar deformed activities are not free.

youdao

在游梁式抽油机上使旋转的平衡块与游梁相连的钢杆。

The steel beam that connects the rotary counterbalance with the walking beam on a beam pumping unit.

youdao

钢杆，钢骨，双金套手柄，色丁布伞面，透明膜包装，晴雨兼用。

Steel pole, steel ribs, golden handle, sadin cloth cover, translucent plastic film packing, both for rainy and sunny use.

youdao