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| emery stone; sanding brick | |||
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刚砂石 : 36 phrases in 10 subjects |
| Architecture | 3 |
| Chemistry | 2 |
| Construction | 2 |
| Electronics | 1 |
| General | 4 |
| Metallurgy | 3 |
| Mineralogy | 1 |
| Nursing | 1 |
| Technology | 18 |
| Wind Energy | 1 |
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