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为什么从松树里能取chu松香

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为什么从松树里能取chu松香?

松香是以松脂为原料制成的。松树的gen、jing2和叶子里面,有许多松脂dao,它们是由一层特殊的生理分mi细胞构成的。分mi细胞能够制造松脂,并不断送到guandao里贮藏起来。每当松树受到伤害,松脂便从guandaoliuchu,很快把伤口封闭。松脂中有些wu质,还能杀死有害病菌,使树木少生病。

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