wood tar造句

• The major achievements are : 1 the extraction of the burning oil of biomass from wood tar by distillation without any other goods of chemistry , in this case no effect to the physical properties of the burning oil of biomass
  本课题的主要研究成果如下： 1采用直接蒸馏方法从木焦油中提取其可燃成分(简称生物质燃油) ，不加入其他任何化学物品，这样不会影响生物质燃油的物理性能。