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2007038525Material engineering
서석효
Technology gap Technology gap between between
Korea & ChinaKorea & China
Solutions• Recycling techniques 1 L(s) = 168 L(g)
ManganeseNickelCopperCobaltetc.
30%1.5%
1%0.2%
Cell phones, computers, electronic devices
Methane HydrateManganese nodule
• Seabed resources
• Encouraging natural science & engineering
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