- 1. Cupel: a porous cup often made of bone ash used in assaying to separate precious metals from base elements such as lead.
- 灰皿：一种多孔杯，通常用骨类制成，在检验中把贵重金属从低劣物质如铝中分离出来。
来自互联网
- 2. Cupel: a porous cup often made of bone ash used in assaying to separate precious metals from base elements such as lead.
- 灰皿：一种多孔杯，通常用骨类制成，在检验中把贵重金属从低劣物质如铝中分离出来。
来自互联网
