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11. | square wave oscillation |
| 矩形波振荡 |
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12. | 250kHz square wave |
| 测试信号E |
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13. | square-wave polarography |
| 方波极谱法 |
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14. | square-wave ringer |
| 方波振铃器 |
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15. | square wave generator |
| 矩形波发生器 |
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16. | square wave modulation |
| 矩形波调制 |
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17. | square wave jerk |
| 方波急跳 |
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18. | square-wave oscillator |
| 方形波振荡器;矩形波发生器;矩形波发生器 |
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19. | square wave pulse |
| 矩形脉冲 |
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20. | reference square wave |
| 基准方形波 |
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