动力短缺已经使多个国家的采矿和熔炼中断。
Power shortages have disrupted mining and smelting in several countries.
煤矿生产中存在着大量的动力扰动，常导致采矿巷道和采场围岩局部失稳，诱发冲击矿压发生。
Many dynamic disturbances often lead to local instability of roadway surrounding rock and mining workplace and result in rock burst in coal mining.
深海采矿扬矿管上的横向液动力由两部分组成：海流作用力、波浪作用力。
Horizontal hydrodynamics of deep sea mining lifting pipe consists of two parts: the forces caused by current and wave.
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