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2013-05-23 12:21
求翻译：Two methods for acoustic determination of average bullet velocity have been presented.Placing the microphone adjacent to the muzzle is more generally applicable. Both methods provide reasonable accuracy, but there are drawbacks. Loud noise can interfere with the measurement, which necessitates more detailed spectral an是什么意思？ 待解决
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Two methods for acoustic determination of average bullet velocity have been presented.Placing the microphone adjacent to the muzzle is more generally applicable. Both methods provide reasonable accuracy, but there are drawbacks. Loud noise can interfere with the measurement, which necessitates more detailed spectral an
问题补充： |
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