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| spherical trigonometry (学，法) | |||
| spheric trigonometry (学); spherical trigonometry (学) | |||
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球面三 角 : 49 phrases in 6 subjects |
| Aviation | 1 |
| Electronics | 1 |
| Mathematics | 2 |
| Scientific | 1 |
| Space | 4 |
| Technology | 40 |
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