At last, the formulation of allowable minimumbendingradius limiting the change of the tube-wall thickness is derived, and proved to be of practical value.
推导出限制弯管壁厚变化量的许用最小弯曲半径公式，经试验验证具有一定的实用价值。
2
Cable racks shall be arranged with vertical and horizontal changes of direction such that no cable is laid at less than its minimum-bendingradius as given by the cable manufacturer.
电缆支架的布置必须与纵向和横向的变化方向，如：所提供电缆生产商不得将电缆敷设低于其最小弯曲半径。
3
A few methods, which approximately calculate minimum relative bendingradius, are put forward by analyzing the stress and strain as plate bending deformation in this paper.