With the bottom of the projection of a white transparent container filled with water, then drip in the water the color ink or oil-based paint.

用一个装满水的白色透明容器的投影的底部，然后在水面点滴彩墨或油基的颜料。

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Düfa is a water-based paint brand invented by Meffert AG Farbwerke in 1955.

德国都芳漆是德国梅菲特工业集团于1955年创立的环保水性漆品牌。

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It's a water-based pure polish, which makes it ideal for a body shop or paint shop environment.

这是一种水性纯抛光，这使得它非常适合于身体商店或油漆车间的环境。

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Though still classic in design (some have two and three heads to make veins and layers), the length and type of hair for the brushes have been changed to accommodate water-based paint, which the industry has embraced in place of oil-based paint.

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