盘梯，指一种盘旋而上的阶梯。
misc. winding staircase
介绍一种球罐盘梯的设计方法。
One design method for winder of spheroidal tank was presented in this article.
并着重对盘梯曲率半径的计算方法及盘梯预制中的整形问题作了讨论。
It also emphasises the calculating method for the radius curvature of the round ladder and discusses the problem of rectifying the form of round ladder in prefabrication.
分析了球罐盘梯的设计条件和各设计参数之间的关系，给出了确定设计参数的步骤。
Design condition of winder of spherical gas-holder and relationship of design parameters are discussed, and steps of determination of design parameters are put forward.
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