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笔者用自制的一台超声波喷泉,为高一物理选读课“超声波及其应用”增加了三个演示实验,趣味性浓,效果极佳。
The author used a self-made ultrasonic fountain to add three demonstration experiments for the high-level physics selective reading course “Ultrasound and its application”, which is interesting and has excellent results.