Now you tilt the board as smoothly as possible to about 45 degrees in direction of the pitch axis.
现在你尽可能平稳地把板倾斜到大约和俯仰轴呈45度角的位置上。
3
No bolt, install the demolition of convenience, to ensure the controllable pitch. Shelves layers board usage can choose steel layer board, plywood, density board.