Vertical array and rotation of triangular pyramid offer various inner community space and different experience to user at the 33 stories tower.
33层塔中的垂直阵列和三棱锥旋转结构给用户提供了各种内部交流空间和不同的空间体验。
2
At last, the cases of three dimensional surrounding sound systems with cube array and triangular pyramid array models by using these formulas are illustrated for example in this paper.
文中导出了正方排列和正三角梭锥（正四面体）排列两种型式的三维（立体）声系统作为这组公式应用之例。
3
Waveguide aperture phased array antenna is analyzed using the transparent source technique and the auxiliary fields FDTD. A method to calculate triangular lattice array is put forward.