圆柱螺旋弹簧设计计算 Design of helical springs ; Design of cylindrical helical springs
该机型不再使用单体圆柱形机身，而改用两个半圆柱形机身并排的设计，这样形成了更宽大的结构，从横截面上看，有如两个连在一起的肥皂泡。
Instead of using a single fuselage cylinder, they used two partial cylinders placed side by side to create a wider structure whose cross-section resembles two soap bubbles joined together.
一个前缀的圆柱滚子轴承代码标识设计。
A prefix of cylindrical roller bearing codes identifies the design.
这些结论和方法对指导圆柱族包络面的设计与制造具有重要价值。
All these conclusions and methods are valuable in instructing the design and manufacture of envelope surface of cylinder family.
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