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| 棱边圆形齿轮 | |||
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edge round : 31 phrases in 7 subjects |
| Automobiles | 1 |
| General | 1 |
| Metallurgy | 1 |
| Polygraphy | 1 |
| Technology | 25 |
| Textile industry | 1 |
| Wind Energy | 1 |
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