successive launching
| method
| successive launch | |
| space | 梯次发射 |
| method | |
| gen. | 法; 标准; 水平 |
| environ. | 方法 |
| hydroel.st. од. | 方法 |
| mech. | 电火花法 |
| |||
| 梯次发射 | |||
|
successive launching : 2 phrases in 2 subjects |
| Bridge construction | 1 |
| Engineering geology | 1 |