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关注：1
2013-05-23 12:21
求翻译：距被测点1m处水平位置噪声为75 dB(A)是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
距被测点1m处水平位置噪声为75 dB(A)
问题补充： |
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2013-05-23 12:21:38
From the measured point at 1m horizontal position noise of 75 db (a)
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2013-05-23 12:23:18
The distance from the point 1m location noise level to 75 (A dB )
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2013-05-23 12:24:58
Is apart from by the measuring point 1m place horizontal position noise is 75 dB(A)
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2013-05-23 12:26:38
From the measuring point at the 1M level to 75 dB of noise (a)
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2013-05-23 12:28:18
null
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