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Hg Franck-Hertz Tube, mounted on support plate - Spare part
Sodium Fluorescence Tube on Furnace Wall
弗兰克-赫兹实验用电源供应器（230 V，50/60 Hz）
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![Greenhouse Effect Kit (230 V, 50/60 Hz), 1000837 [U8460500-230], 温室效应](/thumblibrary/U8460500-230/U8460500-230_01_140_140_Greenhouse-Effect-Kit-230-V-5060-Hz.jpg)
![High-Pressure Mercury Vapour Lamp, 1000852 [U8473155], 光谱管和灯](/thumblibrary/U8473155/U8473155_01_140_140_High-Pressure-Mercury-Vapour-Lamp.jpg)
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![Plumb with Line, Small, 1010169 [U29544], 绳索](/thumblibrary/U29544/U29544_01_140_140_Plumb-with-Line-Small.jpg)
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![Rolling Pendulum -
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