Both design equations and case histories are given in this paper.
文中不但给出了所有的计算公式，还给出了计算实例。
The designer can use the equations as a standard against which proposed design changes.
设计人员可用这些方程作为一个标准，对提出的设计修改作出评价。
The designer can use the equations as a standard against which proposed design changes.
设计人员可用这些方程作为一个标准，对提出的设计修改作出评价。
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