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Device for measuring refractive index on blackboard demonstration light path
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Voltage and current double-closed-loop direct current speed regulation system checking device
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Three-level DC-DC converter examination device
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Photovoltaic power generation system training and checking device
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Training and examining device for rotating speed and current double-closed-loop direct current speed regulating system
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Voltage single closed loop direct current speed regulation system training examination device
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Integrated circuit module air dryer
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Mouse killer
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Detachable gauge needle forceps
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Training and examining device for three-level full-bridge converter
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Chemical gas safety intelligent sensing monitoring system and method
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Intermediate infrared gas sensing equipment
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Automatic chasing and shearing control practical training device
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Intelligent roadside parking charging snapshot device
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Automatic labeling machine for labeling round fruits
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Magnetic flocculant and preparation and application methods thereof
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Robot arm
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Horizontal numerical control perforating machine
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Garbage can capable of saving space
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Spectrometer auto-collimation telescope adjustment demonstration device with search function
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