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| обшивка бетона | |||
| бетонная крышка | |||
| 混凝 土 盖: 12 phrases in 6 subjects |
| Construction | 1 |
| Electronics | 2 |
| General | 1 |
| Nuclear and fusion power | 5 |
| Oil processing plants | 1 |
| Technology | 2 |
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