Vacuum Tube
Refrigerator / Vacuum Tube
Lighting / Fluorescent Lamp
Gas Compressor / Cylinder (Engine)
Sensor / Ultraviolet–Visible Spectroscopy
Syringe / Electrical Connector
Battery (Electricity) / Vacuum Tube
Valve / Personal Protective Equipment
Vacuum Tube / Electric Arc
Gas Chromatography / Cryogenics
Fuse (Electrical) / Vacuum Tube
Air Conditioning / Mechanical Fan
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