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| 前管角 | |||
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head angle : 19 phrases in 8 subjects |
| Automobiles | 3 |
| Aviation | 1 |
| Dermatology | 1 |
| Electric machinery | 1 |
| Oil / petroleum | 1 |
| Plastics | 5 |
| Polymers | 1 |
| Technology | 6 |
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