The extraction technique of Labdanum was studied by supercritical carbon dioxide extraction method.
采用超临界二氧化碳萃取技术，研究了岩蔷薇的萃取工艺。
2
'when your perfume contains the' tears' or resins that 'weep' from the barks of trees when they're wounded, as labdanum and balsams do, what do they expect?