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| 51. | self-timing anemometer |
| 自动计时风速计 |
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| 52. | subscription [toll] television |
| 计时收费电视 |
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| 53. | time kicking |
| 打腿计时 |
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| 54. | recording clockwork |
| 记录计时机构 |
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| 55. | timing electronics |
| 计时电子学设备 |
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| 56. | antique horologes |
| 古代计时仪器 |
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| 57. | timing impulse generator |
| 计时脉冲发生器 |
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| 58. | clocking relay state |
| 计时中继状态 |
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| 59. | chronometric radiosonde |
| 计时无线电探空仪 |
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| 60. | precision timing circuit |
| 精确计时电路 |
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