thin-cylinder formula

Based on the explicit expressions a equivalent thin shell finite ring element of supporting columns of hyperbolic cooling towers is proposed by using equivalent stiffness method. The formula of the thickness of equivalent finite ring element and formulas of internal forces of supporting columns are given.

本文利用半解析环元刚度矩阵的显式结果，采用刚度等效的工程方法，直接将柱支撑等效为一个旋转薄壳环元，给出了该环元的等效厚度计算公式。

The formula specially designed for men works to release toxic heat, prevent blackhead growth, thin pore, and clean skin.

特别为男士设计的专用配方，能清除热毒，防止黑头生成，幼细毛孔，使肌肤光洁润泽，充满魅力。

This paper presents a new design method for thin-wall hot-rolled channel columns in fire condition using Rankine formula.

基于Rankine公式，提出了一种可用于计算热轧薄壁槽钢柱抗火极限的方法，采用有限元软件MSC。

A formula for calculating steel deck deflection under construction is obtained by using shell element, and this avoids a complex operation of effective width for thin-walled section.

通过对施工阶段的压型钢板进行整体建模分析，提出了施工阶段压型钢板的挠度实用计算公式，避开了求解有效宽度的繁复运算；

The research on the phrase relationship of light on the interface is based on the theory of thin film optics-Fresnel's formula.

运用薄膜光学的理论基础&Fresnel公式，研究光在界面上的位相关系。