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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 ...

    • 經濟有關之英文文章英翻中(急)

      ...extractive industries producing coal, oil, gas, chemicals, and metals; 完備的採礦與精煉工業生產了煤,石油,天然氣,化學原料與金屬; all forms of machine building from rolling mills to high-performance aircraft and space vehicles...