Variable Cycle
| Engine
| variable cycle abbr. | |
| space | 可变周期 |
| engine abbr. | |
| auto. | 发动机，引擎 |
| comp.games. | 游戏引擎 |
| met. | 机器 |
| space | 机械 |
| sport. | 游戏引擎 |
| tech. | 引擎; 发动机; 机车 |
| |||
| 可变周期 | |||
|
Variable Cycle : 18 phrases in 8 subjects |
| Automobiles | 2 |
| Aviation | 4 |
| Business | 1 |
| Electronics | 4 |
| Information technology | 1 |
| Oil / petroleum | 1 |
| Space | 3 |
| Technology | 2 |