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| kick pleat; inverted pleat | |||
| 倒褶: 36 phrases in 8 subjects |
| Desert science | 3 |
| Drilling | 1 |
| Engineering geology | 3 |
| General | 2 |
| Hydroelectric power stations | 1 |
| Oil / petroleum | 10 |
| Technology | 4 |
| Textile industry | 12 |
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