gum-resin 胶质树脂 ; 树胶树脂 ; 胶树脂
oleo-gum-resin 油胶树脂
Haolun gum resin compound 浩伦松碱合剂
aromatic gum resin 一种类似没药的芳香树脂
extract from gum resin 树胶脂浸膏
gum resin 胶尸 ; [林] 树胶脂
synthetic resin gum 合成树脂胶
optical resin gum 光学树脂胶
Gum and resin plants 脂料植物
Why do some trees produce sticky gum or resin?
为什么有些树木会产生树脂或粘性胶状物？
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。
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.
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。
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