General Science · Inventions and Discoveries

अर्नस्ट ओ. लॉरेंस ने पहला साइक्लोट्रॉन किस वर्ष विकसित किया था?

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1930

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अर्नस्ट ओ. लॉरेंस ने पहला साइक्लोट्रॉन किस वर्ष विकसित किया था?

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अर्नस्ट ओ. लॉरेंस ने पहला साइक्लोट्रॉन किस वर्ष विकसित किया था?

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