The reasonable hoop distance can be obtained according to pressure influence height.
根据压力影响高度，即可计算上下两道环箍之间的合理距离。
The influence of water temperature on water head height becomes bigger as the well depth increases. The pressure at the well bottom has to be measured by instruments in the well.
随着井深增加，水温对水头高度的影响越来越大，需要采用下井仪器测量井底压力。
The influence of pressure, static bed height and fluidized air on the minimum spouting velocity was studied.
研究了压力、静止床高及流化风对最小喷动速度的影响。
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