| |||
active coating | |||
active sleeve | |||
active layer | |||
emission coating |
活性层: 19 phrases in 9 subjects |
Agriculture | 1 |
Earth sciences | 1 |
Electronics | 1 |
Engineering geology | 1 |
Explosives and Explosive Ordnance Disposal | 1 |
Forestry | 1 |
Metallurgy | 1 |
Oil / petroleum | 2 |
Technology | 10 |