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發表於 2011-6-26 05:31 PM
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罕見金屬 (10P)
1)黃金的合成晶體。(Synthetic crystals of gold)
2)鉍晶體 (Crystals of bismuth)
3)純度(>99.95%),人造銀晶體 (Artificial silver crystal)
4)晶體(99.999%),鉻 (Chromium)
5)釔 (Yttrium)
6)鎢管 (Tubes tungsten)
7)鈮晶體 (The crystals of niobium)
8)鈦晶體 (Titanium crystals)
9)鋨晶體 (The crystals of osmium)
10)純鐵件 (Pieces of pure iron)
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