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| 暴露面积 | |||
| area exposed: 21 phrases in 9 subjects |
| Automobiles | 2 |
| Bridge construction | 1 |
| Dermatology | 1 |
| Electronics | 3 |
| Finances | 1 |
| Oil / petroleum | 2 |
| Plastics | 1 |
| Refrigeration | 2 |
| Technology | 8 |
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