Flat tube in any cross section are oblong, the length of the shaft according to the tubepitch to determine the size of.
扁管在任何一个截面均为长圆形,其长短轴根据管心距的大小来确定。
2
Based on this, the interrelations between the elastic coefficient and the structural parameters of the nanospring, such as tube diameter, spring diameter and coil pitch, are carefully studied.