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    • about tin!!!! science!! 20 pt

      ...50 uses: Some important tin alloys are: bronze, bell metal, Babbitt metal, die casting alloy, pewter, phosphor bronze, soft solder, and...

    • About Eiffel Tower<20!!>

      1. It was built on March 31, 1889. 2. The architect was...liquid phase to prevent the carbon and the impurities in the metal from associating. It was quite well ...

    • 無機化學-半導體

      ... increasing the intensity etc. of (Cu)Zn, which help to build up the Zn in ZnO, through the maximizing effect of (p-->n...