raw rosin的意思|示意

Fumaropimaric acid was prepared from rosin and fumaric acid as raw materials.

以富马酸和松香为原料制备富马海松酸。

Using hemihydrate gypsum as main raw materials and frothing by gum rosin composite vesicant to produce gypsum heat preserving material.

以建筑石膏为原料，采用松香类复合发泡剂发泡制成石膏保温材料。

The cationic rosin was synthesized by solvent method, with rosin, trimethylamine and epoxy chloropropane as raw materials.

采用松香、三甲胺和环氧氯丙烷为原料，溶剂法合成了阳离子松香。