The heat transfer enhancement increases and then decreases with the increase of the distance between rows, and is highest when the distance between rows 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。
By cr microalloying, the fore eutectoid ferrite eduction is restrained, the distance between rows of pearlite is decreased, then the tensile strength, section shrinkage and drawing property of high...
高碳钢中加入的铬元素抑制先共析铁素体析出，减小珠光体片层间距，可明显提高抗拉强度，提高断面收缩率，改善线材的拉拔性能。
Often the distance between the rows is about twice their height.
（积云）云间距离通常大约是条云本身高度的2倍。
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