density change
| method
| density change | |
| avia. | 密度改变 |
| met. | 密度变化 |
| method | |
| gen. | 法; 标准; 水平 |
| environ. | 方法 |
| hydroel.st. од. | 方法 |
| mech. | 电火花法 |
| |||
| 密度改变 | |||
| 密度变化 | |||
| 密度换相 | |||
|
density change : 10 phrases in 4 subjects |
| Explosives and Explosive Ordnance Disposal | 3 |
| Metallurgy | 3 |
| Oil / petroleum | 1 |
| Technology | 3 |