| |||
| 合成双基 (火箭推进剂) | |||
| |||
| 复合双基 (推进剂); propellant复合双基推进剂 | |||
|
composite double-base : 10 phrases in 3 subjects |
| Aviation | 1 |
| General | 1 |
| Space | 8 |
| |||
| 合成双基 (火箭推进剂) | |||
| |||
| 复合双基 (推进剂); propellant复合双基推进剂 | |||
|
composite double-base : 10 phrases in 3 subjects |
| Aviation | 1 |
| General | 1 |
| Space | 8 |