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| винтовая форма | |||
| цилиндрическая форма | |||
| кольцевая форма | |||
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圈状 : 41 phrases in 8 subjects |
| Chemistry | 2 |
| Construction | 1 |
| Electronics | 10 |
| General | 10 |
| Geology | 1 |
| Medical | 1 |
| Oil processing plants | 1 |
| Technology | 15 |
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