 |
| |||
| 反光镜 | |||
|
reflection mirror : 13 phrases in 7 subjects |
| Air defense | 1 |
| Astronomy | 1 |
| Chemistry | 3 |
| Earth sciences | 1 |
| General | 1 |
| Metallurgy | 2 |
| Technology | 4 |
|
| |||
| 反光镜 | |||
|
reflection mirror : 13 phrases in 7 subjects |
| Air defense | 1 |
| Astronomy | 1 |
| Chemistry | 3 |
| Earth sciences | 1 |
| General | 1 |
| Metallurgy | 2 |
| Technology | 4 |