The sound absorption coefficient of the material was tested by standing wave tube method.
采用驻波管法测试材料的吸声系数.
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经采用低频声波清灰装置,减少了检修和维护的费用.
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Broadband: A band of light wave or sound wave with a wide range of frequencies.
阔波段: 频率范围广的一段光波或声波.
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本文介绍了静电除尘器声波清灰的特点, 声波清灰原理 、 声波发生器性能以及静电除尘器声波清灰设计要点.
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The outer ear ( the pinna ) receives a single sound wave composed of different sounds.
外耳 ( 耳廓 ) 收集含不同声音的单声波.
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A new wave of musical trend is across American and the world-the Latin American sound rediscovered.
一股新的流行音乐之风正席卷美洲大陆,冲击世界浒乐坛 - 拉美节奏卷土重来.
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Suppose the speakers both emit a pure sinusoidal sound wave of constant frequency.
假定两个扬声器都发射恒定频率的纯正弦声波.
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Discharge the shaking box of ultra sound wave flexibly according to the actual demand.
据实际需求将超音波振盒灵活排放.
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The resulting ultrasonic sound wave can then be directed out in a tightly controlled beam.
由此超声音波可以用严格控制声音的方向.
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The decline effect of fabric on sound wave has the chractaristic of frequency alternative.
织物对声波的衰减作用具有频率选择性.
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It is well known that sound wave has both scalar quantity field and vector quantity field.
众所周知,声波兼有标量场和矢量场.
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Clouds after another, the sound wave Buddha, give people the impression that time had passed slowly.
白云朵朵, 佛音袅袅, 让人感觉时间变得柔软和静谧.
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