Copper, gold, and silver gradient templates. Just choose one of the gradients and delete two of the words. For example, if you want to use a gold gradient, delete the "Copper" and "Silver" words, draw a shape, use that gradient, and delete the "Gold" word. 銅 黃金 銀 銅、 黃金、 和銀漸變
Graphic created from the three stages description of amalgam lifespan (p.65). Source: Daunderer M. (2011). Gifte im Alltag. München: C.H. Beck, 3 ed. 銀汞合金 科學 教育 牙科銀汞合金充填階段
animals ganson dog mammals dogs copper beagle animal mammal Copper The Beagle clip art 銅 比格犬 動物 銅比格犬剪貼畫