 |
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| 射线状结构 | |||
| 射线结构 | |||
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ray structure : 50 phrases in 15 subjects |
| Agriculture | 3 |
| Aviation | 2 |
| Chemistry | 7 |
| Earth sciences | 7 |
| Electronics | 9 |
| Genetics | 3 |
| Geology | 4 |
| Leather | 1 |
| Materials science | 3 |
| Metallurgy | 3 |
| Physics | 1 |
| Polymers | 2 |
| Space | 1 |
| Technology | 3 |
| Textile industry | 1 |