The colors include water white, amber or dark colors.
2
松香甘油酯由松香或精制松香与甘油酯化而成浅黄色或水白色透明固体，是一种优良的增粘树脂。
It is the slight yellow or water-white transparent solid, which is made from gum rosin or refined gum rosin through esterification with glycerol; it is a good tackifying resin.
3
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。
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.
点击反馈