管中
6.FRICTIONAL PRESSURE DROP OF NON-NEWTONIAN FLOW OF CO_2 FOAM FRACTURING FLUID IN VERTICAL DOWNWARD PIPE
9.Application of a Highly Anti-abrasivc Metal-ceramic Complexed Pipe for Pulverized Coal and Ash(slag) Handling
10.An experience of Eswl with Ureteral Balloon Catheters for the Treatment of Middle and Upper Ureteral Stones(Report of 25 Cases)


