氣柱共鳴實驗器-電子音源
1.共鳴管透明壓克力製,外徑40m/m,內徑34m/m,長330m/m,上有0~320m/m量尺,最小1m/m
2.支架:白色壓克力製,厚5mm
3.尺寸:450x100x30mm
4.電子音源約2000-2500HZ
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