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| 正弦波 | |||
| sinusoidal wave: 14 phrases in 8 subjects |
| Bridge construction | 1 |
| Electric machinery | 4 |
| Electronics | 1 |
| Oil / petroleum | 1 |
| Rail transport | 1 |
| Technology | 4 |
| Telecommunications | 1 |
| Wind Energy | 1 |
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