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关注：1
2013-05-23 12:21
求翻译：Let's assume that, in a particular classroom, the average difference between the sound level of the teacher's voice and the level of the classroom background noise produced by the air conditioning system is 10 dB at a student's listening position 10 feet from the teacher.是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
Let's assume that, in a particular classroom, the average difference between the sound level of the teacher's voice and the level of the classroom background noise produced by the air conditioning system is 10 dB at a student's listening position 10 feet from the teacher.
问题补充： |
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2013-05-23 12:21:38
假设，在1特别教室，“在老师的声音的声音水平和在课堂背景的空调系统产生的噪音水平之间的平均差异是学生的听老师10英尺的位置10分贝。
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2013-05-23 12:23:18
assume that Let ' s, in a particular classroom, the difference between the average sound level of the teacher' s voice and the level of the classroom background noise produced by the air conditioning system 10 is a student at dB ' s listening position 10 feet from the teacher.
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2013-05-23 12:24:58
Let's assume that, in a particular classroom, the average difference between the sound level of the teacher's voice and the level of the classroom background noise produced by the air conditioning system is 10 dB at a student's listening position 10 feet from the teacher.
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2013-05-23 12:26:38
正在翻译，请等待...
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2013-05-23 12:28:18
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