The method avoids that hole of taking pressure is blocked by used average-velocity tube to measure unpurged one phase fluid in the big pipe.
避免大口径管道采用均速管测量非洁净流体时，取压孔被堵塞问题。
The effects on solids holdup of heat exchanger tube, bed height, static pressure drop and average solids holdup of inlet chamber by superficial velocity were studied in different main distributors.
在不同结构形式的主分布器条件下，研究了表观液速对换热管中固含率、下管箱内床层高度、静压降及平均固含率的影响。
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