Without the dissolving of the turpentine oil, the solid state rosin can not seep out from the wood.
失去了松节油溶解作用的固态松香，在木材中不再渗出。
2
Semifluid mixtures of organic compounds consisting of resins dissolved in a volatile oil, turpentines can be distilled into the volatile oil of turpentine and the nonvolatile rosin.
它是半流质的有机化合物，由树脂在挥发性油中溶解而成，松脂可以被提炼成松脂挥发油和非挥发性松脂。
3
The important role of rosin, oil of turpentine, tannin, activated carbon of forest chemical industry in national economy are point out.