“oil pumping unit”可以造什么句，oil pumping unit造句

2、Governor oil pumping unit and hydraulic accumulator shall be tested and correct functioning of the system will be verified.

1、Influence of vibration load of oil pumping unit on the camber wear of rod tube and its prevention.

3、In this paper, analyzed the beam-Pumping unit's main problems of wasting energy and low efficiency in use and researched on a variety of new oil pumping unit status.