second surface
| mirror
| second surface | |
| chem. | 背面 |
| mirror | |
| gen. | 镜 |
| avia. | 反射器 |
| busin. | 借鉴 |
| el. | 镜面 |
| hydroel.st. | 镜面的 |
| met. | 反射镜 |
| sport. | 镜子 |
| sport. med. | 反光镜 |
| tech. | 鸟翼上的翼镜 |
| telecom. | 对称 |
| |||
| 背面 | |||
|
second surface : 14 phrases in 6 subjects |
| Aviation | 2 |
| Electronics | 2 |
| Oil / petroleum | 1 |
| Plastics | 2 |
| Space | 4 |
| Technology | 3 |