So the minimal uncontrolled roof-fall span, displacement Angle and caving Angle are studied by similarity simulation.
借助相似模拟试验，研究了顶板自然垮落的最小跨度、移动角和垮落角。
In the second one, the input current displacement Angle is dynamically modulated as a function of positive-and negative-sequence components of the input voltages.
第二种控制策略中，输入电流矢量根据输入电压正、负序成分进行动态调制。
With mining depth increasing continuously in our country, in condition of mining in the deep-lying, there are many problems in determining displacement Angle of stratum at present.
随着我国煤矿开采深度的不断增加，指出了目前岩层移动角的确定存在诸多问题。
应用推荐