dynamometer card meaning in English

测力计录卡
测力记录卡
示功图

Pump dynamometer card shape directly reflects the characteristics of different factors that influence the working performance of sucker rod pump performance
泵功图的形状直接反映着抽油泵受不同因素影响下的特征。
Using the finite difference method , the wave equation describing the dynamic change of sucker rod is solved , the pump dynamometer card is calculated combining with practical example , the pump dynamometer card taken from that calculating method is analyzed , and the governing factors influencing working performance of sucker rod pump are pointed out , the performance and efficiency of sucker rod pump are improved by the reasonable adjustment of suction parameters
本文利用有限差分法求解了描述抽油杆柱动态变化的带阻尼的波动方程，计算出了反映抽油泵工作性能的泵功图。结合实例，对仿真得出的泵功图进行分析，找出了影响泵况的主要因素，通过参数调整，改善了抽油泵性能，提高了油井效率。