rocket booster
| development program
| rocket booster | |
| space | 助推火箭; 火箭助推器 |
| development programme | |
| oil | 发展规划 |
| tech. | 开拓方案; 发展方案; 开发方案; 建设规划; 研制计划; 改进计划 |
| |||
| 助推火箭; 火箭助推器 | |||
|
rocket booster : 24 phrases in 8 subjects |
| Air defense | 1 |
| Aviation | 4 |
| General | 3 |
| Scientific | 1 |
| Sealing | 1 |
| Space | 11 |
| Technology | 1 |
| United States | 2 |