Load Loss of Pumping Unit with Dual Donkey Heads and Corresponding Measures
双驴头抽油机的失载问题与对策探讨
Improve fatigue strength of sprayed concrete to improve the pumping performance, reduce the loss of resilience.
调动井喷水泥疲劳烈度，改善泵送机能，递减回弹损失。
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