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关注：1
2013-05-23 12:21
求翻译：1.3井下激励信号的发射频率与幅值选择是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
1.3井下激励信号的发射频率与幅值选择
问题补充： |
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2013-05-23 12:21:38
1.3 underground launching excitation signal frequency and amplitude selection
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2013-05-23 12:23:18
1.3 The launch silo inspire signal frequency selection with substantial value
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2013-05-23 12:24:58
1.3 mine shaft drive signal transmitting frequency and peak-to-peak value choice
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2013-05-23 12:26:38
1.3 selection transmitting frequency and amplitude of excitation signal under
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2013-05-23 12:28:18
Transmission frequency and amplitude of encouraging the signal 1.3 in the pit choose
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