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. 银汞合金 科学 教育 牙科银汞合金充填阶段
box blue cartoon recycle recycling container bin recyclables bins Aj Recycling Bin clip art 回收 Aj 回收站剪贴画
The SPI resin identification coding system is a set of symbols placed on plastics to identify the polymer type. Bonus Unicode & Green Dot Symbol. 树脂 鉴定 编码 树脂标识代码
An empty blue recycling bin (blue box) drawn in 3-D perspective, with a recycling symbol and the words "We Recycle" on the side. 回收站 回收 蓝色的框 空的回收箱-用词
sign green blue bottle cartoon recycle recycling logo bin bottles plastic cartoons rubbish bins recyling recycleing Recycling Bin And Bottles clip art 回收 瓶 回收 Bin 和瓶剪贴画