met·al·log·ra·phy /ˌmɛtḷˈɑgrəfi/
金屬組織學,金相學
Met·al·log·ra·phy n.
1. The science or art of metals and metal working; also, a treatise on metals.
2. A method of transferring impressions of the grain of wood to metallic surfaces by chemical action.
3. A substitute for lithography, in which metallic plates are used instead of stone.
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