管径大于DN200流速为30-40ms管径小于DN200大于DN100流速为25-35ms流速为30-40ms管径小于DN100流速为15-30ms蒸汽管道DN25表压3.5Ga=2.25×(25100)2蒸汽量=Wb(20)GaWa(35)=0.08ThCreated with an evaluation copy of Aspose.Words. To discover the full