The propeller blades are calculated by a vortex lattice method, while the pod including its strut by a boundary element method for non-lifting bodies.
螺旋桨采用升力面理论涡格法、吊舱采用面元法分析计算，二者的相互干扰通过叠代计算来处理。
2
A theoretical approach analyzing electrical performance for dielectric loaded du al-layer Frequency Selective Surface (FSS) configuration with dissimilar lattice and element geometries is proposed.
提出了一种研究不同栅格及单元外形并有介质加载的双层频率选择表面（FSS）电性能的理论分析方法。
3
The way of computing immediate predecessor (successor) of the new element is given, so the problem of constructing concept lattice is solved on condition that the attribute set is constant.