The calculation of changing section foundation beams is also studied, and the calculation formulae are worked out.
并对变截面弹性地基梁的计算进行研究，得出计算公式。
Accordingly, the various elastic foundation beams models and the formulae of foundation beams with changing section can be worked out to develop a calculation system.
推导出各种地基弹性地基模型及变截面的地基梁的计算公式，形成了一个较完整的计算系统。
As a result, with phase unwrapping technique based on Fourier transform, any cross section projection could conveniently be worked out from the Moiré deflectogram of rocket exhausted plumes.
结果发现，根据火箭喷焰的莫尔条纹，采用傅里叶变换相位展开技术，可以方便地提取任意截面的投影信息。
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