如图8所示,四支相同的试管内半装有不同深度的水。当用嘴贴着管口吹气时,振动�声的是 ,�出的声音的音调由高到低的顺序是 。——青夏教育精英家教�—— Template




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tomski如图8所示,四支相同的试管内半装有不同深度的水。当用嘴贴着管口吹气时,振动�声的是 ,�出的声音的音调由高到低的顺序是 。——青夏教育精英家教�—— coloring