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$2,200
電動迴轉式，音盤直徑150mm 迴轉台高度尺寸：320mm 附有速度調節器1組 吹氣管30cm 1條
Used to observe sound by blowing. Consists of Φ150mm multi-apertured steel disk mounted on a variable speed control motor, attached to a 320mm height steel stand. Unit also includes plastic tubing.
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