These products are mixtures of many chemicals created by high-temperature treatment of beech and other woods, coal, or from the resin of the creosote bush.
这些产品的混合物许多化学品所造成的高温处理榉木等木材，煤炭，或从树脂的焦油布什。
These products are mixtures of many chemicals created by high-temperature treatment of beech and other woods, coal, or from the resin of the creosote bush.
这些产品的混合物许多化学品所造成的高温处理榉木等木材，煤炭，或从树脂的焦油布什。
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