This is done by applying one sine wave to the two verticalplates.
其方法是把一个正弦波加到两个垂直板上。
2
A bracket with a pair of parallel verticalplates engages opposite sides of a round post and has end portions projecting away from the post in opposite directions.
一个有一对平行的垂直板支架从事的圆立柱的两侧，并预计年底部分离后，在相反的方向。
3
Vertical tubes transfer the entire mass of the structure to the ground where they rest on square base plates to spread the load.