master event
| sequence controller
| master event | |
| earth.sc. | 主导事件 |
| sequence controller | |
| math. | 顺序控制器 |
| space | 顺 序控制器 |
| tech. | 顺序序控制器 |
| |||
| 主导事件 | |||
|
master event : 4 phrases in 3 subjects |
| Aviation | 2 |
| Electronics | 1 |
| Space | 1 |