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| 夹层儿; 小层 | |||
| 夹层; 间层; 开发小夹层 | |||
| 薄片; 薄层; 矿层 | |||
| прослой: 8 phrases in 3 subjects |
| Geology | 5 |
| Oil / petroleum | 2 |
| Technology | 1 |
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