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pyrocollodion. How to pronounce the english word pyrocollodion.Start with S. Learn from me.



pyrocollodion
  • 英语发声
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  • Pyrocollodion is a smokeless powder invented by Dmitri Mendeleev. Mendeleev discovered it in 1892 and proposed to use it to replace gunpowder in the Russian Navy.

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    1、焦珂罗酊
    焦珂罗酊

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