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| quadrature-quadrature phase shift keying (卫星通信中的一种开关式载波调制方式); quadrature QPSK; quadrature-quadrature PSK | |||
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正交-正交相移键控 : 9 phrases in 5 subjects |
| Air defense | 2 |
| Geophysics | 1 |
| Information technology | 2 |
| Space | 3 |
| Technology | 1 |
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