To improve the accuracy of convection weather forecast, one of the key issues is to find out the atmospheric verticalstability and wind shear.
提高对流天气临近预报准确率的关键问题之一是了解大气的垂直稳定度和垂直风切变。
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Theoretical analysis is used to analyze shaft drilling lining's verticalstability problem in floating and dropping phases, its stable equilibrium is proved.
The verticalstability of runaway card blocked has been mainly. an the runaway car not overturn are set up, thus providing another basis for deigning the car bumper.