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| isometric drawing | |||
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| isometric drawing | |||
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等角图 : 32 phrases in 13 subjects |
| Agriculture | 1 |
| Architecture | 3 |
| Aviation | 1 |
| Chemistry | 1 |
| Compressors | 1 |
| Desert science | 1 |
| Hydraulics | 1 |
| Mathematics | 1 |
| Oil / petroleum | 2 |
| Space | 1 |
| Statistics | 1 |
| Technology | 17 |
| Water resources | 1 |
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