finned tube

用法例句

Considering the shrouded blades of aeronautic engine and roll s lifting motor tray as combination cantilever plates,three coupled nonlinear differential equations of motion of cantilever plates are derived from the theory of thin elastic plate with the effects of damping and geometric large-amplitude vibration taken into account.

为研究电机升高片,发动机凸肩叶片的非线性振动特征,将其简化成组合悬臂板模型,应用弹性薄板理论,推导出考虑阻尼、几何大变形的三个互相耦合的非线性振动微分方程。

Based on the theory of thin elastic plate,differential equations have been derived for the vibration of three shrouded blades.

凸肩叶片的振动响应主要取决于整体的固有频率、激振频率、激振力大小等因素,凸肩使各叶片相互作用,叶片整体的刚度增大。

These segments are called convex segments, and a BSP tree is constructed for the segments.

将多边形窗口的边顺序地分割成一些片段,使得每个片段都能局部地形成一个凸多边形,称为凸片段,并建立一个二叉树来管理这些凸片段·在裁剪计算时,先根据二叉树快速地找到与被裁剪线段相交的凸片段,再利用高效的凸多边形线裁剪算法对这些凸片段进行裁剪操作·文中算法能有效地降低裁剪计算的时间复杂度,使其在O(logN)~O(N)之间自适应地变化,且大部分情况下时间复杂度小于O(N)