Gum rosin is a kind of natural resin with high economic value.

松香是一种具有重大经济价值的天然树脂.

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A solution of natural resins and solvent.

天然树脂溶解于溶剂中的溶液.

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Rosin: A type of matural resins and is an important component in papermaking size.

松香: 是一种天然树脂,并且是造纸用胶的一种主要成份.

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Bases is on film that is typically a natural resins or synthetic resin.

主剂是上光涂料的成膜物质,通常为天然树脂或合成树脂.

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Natural resins are usually transparent or translucent yellow to brown and can melt and burn.

天然树脂通常是透明的,或者是半透明的黄色到棕色物,能够熔化和燃烧.

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A type of natural resins and is an important component in paper - making size.

是一种天然树脂,并且是造纸用胶的一种主要成份.

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