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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Conservation and restoration of ivory objects ： ウィキペディア英語版 Conservation and restoration of ivory objects Ivory carving is a decorative art or craft practised since prehistoric times. Its conservation is concerned particularly with the environmental causes of deterioration. ==Ivory== Ivory is the term for the tusks and teeth of mammals including the elephant, hippopotamus, warthog, wild boar, walrus, narwhal, and mammoth. Elephant ivory comprises up to 55% inorganic matter - mainly calcium phosphate, as well as magnesium phosphate and calcium carbonate - the remainder consisting of the organic protein dentine. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Conservation and restoration of ivory objects」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.