Month: April 2021

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         2021/04/27 Silicon Photonics: Why is it essential for 5G?
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         2021/04/26 The Feature of Jewelry
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          Crystal of Jewel
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          Color of Jewel
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          Cut of Jewel
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          Cleavage of Jewel
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         2021/04/20 Novel Diamond Semiconductors Operate at Highest Power Ever
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         2021/04/14 Production of Sapphire
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          What is the Sapphire?