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Hand Generator Hand-cranked Ac and Dc Generator Hand-cranked Three-phase Ac and Dc Generator Experimental Equipment
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Centripetal force demonstrator to verify centripetal force size experimental equipment Senior high school physical mechanics experimental instrument
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Demonstration electromagnetic relay J24014 physical electromagnetism experiment relay demonstration instrument teaching instrument teaching aids
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Demonstration electromagnetic relay 24014-type mechanics experimental equipment physics teaching experimental instrument for junior and senior high schools
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