The heat transfer enhancement increases and then decreases with the increase of the distancebetweenrows, and is highest when the distancebetweenrows is 10D.
双排气膜孔出流对换热的增强效果随孔排距的增加先增大后减小,在孔排距为10D时最大。
2
By cr microalloying, the fore eutectoid ferrite eduction is restrained, the distancebetweenrows of pearlite is decreased, then the tensile strength, section shrinkage and drawing property of high...