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| 法线角 | |||
| 正常角 (面); 常角; 法向角; 法线角 | |||
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normal angle : 20 phrases in 6 subjects |
| Automobiles | 3 |
| General | 1 |
| Oil / petroleum | 1 |
| Remote sensing | 1 |
| Sports | 1 |
| Technology | 13 |
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