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。

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In the condition of high temperature and high humidity, the turpentine oil will boil together with water, and it will be removed from the test wood accompanying with the water vapour.

在高温高湿条件下，木材中的松节油与水在紧接水的沸点温度下共沸，并随蒸汽排出试材。

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Some of them come first on the list in the world, such as cassia oil, star anise, peppermint oil, menthol, turpentine oil, eucalyptus oil and cedar wood oil etc.

其中，如桂油、八角茴香、薄荷油、薄荷脑、桉叶油、松节油、柏木油等的产量已居世界前列或首位。

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