| |||
| 元素线; 元素光谱线 | |||
|
element line : 27 phrases in 11 subjects |
| Air defense | 1 |
| Automobiles | 1 |
| Business | 1 |
| Chemistry | 1 |
| Electronics | 2 |
| Mathematics | 5 |
| Metallurgy | 3 |
| Plastics | 1 |
| Sealing | 1 |
| Surveying | 1 |
| Technology | 10 |
| |||
| 元素线; 元素光谱线 | |||
|
element line : 27 phrases in 11 subjects |
| Air defense | 1 |
| Automobiles | 1 |
| Business | 1 |
| Chemistry | 1 |
| Electronics | 2 |
| Mathematics | 5 |
| Metallurgy | 3 |
| Plastics | 1 |
| Sealing | 1 |
| Surveying | 1 |
| Technology | 10 |