用“beam pumping unit”造句大全，beam pumping unit造句

Optimum design for double-horse head beam pumping unit is a question of non-linear programming with inequality constraint condition and multi-objective function.

Compared with conventional beam pumping unit, the swing-rod beam pumping unit can reduce the maximum crank axle torque markedly, reduce and even eliminate negative crank axle torque.

Development of the balance-type walking beam pumping unit and field test

Based on the theory of modular design,a beam pumping unit is assumed to be separated into several modules according to their specific functions.

The geometric dimensions and balance parameters of the beam pumping units are optimized. As a result, Me is re- duced 31.2% and Mnmax is reduced 35.3% than phased balance.

The steel plate that is attached to the end of the walking beam on a beam pumping unit.

The influence of variable load on a beam pumping unit on the electric current, input power, efficiency and power factor of the electric motor is discussed, and relevant calculating formulae are given.

Optimum design for double-horse head beam pumping unit with rear horse head′s outline of spiral of Archimedes

Two-horse head beam pumping unit rod load and torque variation

The Performance of a beam pumping unit with incremental, stroke is influenced by the linkage dimensions of the cross double rocker mechanism.

Dynamics simulation of hydraulic beam pumping unit based on 3D model.