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monopole source
释义
monopole source
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理学
﹝井孔声场中的波和声源﹞
释
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向各个方向发出球对称的声场,产生的声压与距离成反比,与方向无关,与声源强度成正比。
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ecological pyramid
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ecological remote sensing
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ecological restoration of abandoned mines
ecological restoration of Chinese materia medica resources
ecological restoration of deserts
ecological restoration of invasive place
ecological restoration of lake littoral zones
ecological restoration of lakes
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