| |||
self-protection; self-screenage | |||
self-shielding | |||
self-shadowing | |||
| |||
self-screening | |||
self-shadowing; self-shielding | |||
| |||
self-shielding; self-shadowing | |||
| |||
self-shadowing | |||
| |||
self-hiding gate |
自屏蔽 : 25 phrases in 8 subjects |
Agriculture | 1 |
Air defense | 2 |
Automobiles | 1 |
Aviation | 3 |
Electronics | 5 |
Nuclear and fusion power | 2 |
Space | 4 |
Technology | 7 |