Birch tar
Birch tar or birch pitch is a substance (liquid when heated) derived from the dry distillation of the bark of the birch tree.
Birch tar
英语百科
| 单词 | Birch tar |
| 释义 |
Birch tar
英语百科
Birch tarBirch tar or birch pitch is a substance (liquid when heated) derived from the dry distillation of the bark of the birch tree. |
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