valve-in-block
| engine
| valve in block | |
| auto. | 侧置气门 |
| engine | |
| 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 |
| |||
| 侧置气门 | |||
|
valve-in-block : 3 phrases in 2 subjects |
| Automobiles | 2 |
| Technology | 1 |