[ 复数 tars 第三人称单数 tars 现在分词 tarring 过去式 tarred 过去分词 tarred ]
Phenols are rich in tar, accounting for 17-26wt%.
平庄褐煤加氢热解焦油中总酚的含量占无水焦油17-26wt%。
参考来源 - 平庄褐煤热解及加氢热解焦油中酚的分布研究·2,447,543篇论文数据，部分数据来源于NoteExpress
N-UNCOUNT Tar is a thick black sticky substance that is used especially for making roads. 沥青
The oil has hardened to tar.
油已硬化成沥青了。
N-UNCOUNT Tar is one of the poisonous substances contained in tobacco. (烟草中的) 焦油
...strict guidelines as to the amount of tar contained in cigarettes.
…关于香烟中焦油含量的严格的指导原则。
V to coat with tar 用焦油或沥青涂抹
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