sucker rod substitute

• 抽油杆接头

sucker rod substitute的用法和样例：

例句

1. The new assembly can make the joint of the polished rod pass through, therefore can meet the need of new oil production technology.
   这种密封盒可以使比光杆杆体直径大得多的光杆接头通过，能满足新的采油工艺需要。