用化学分析方法测定了工业用石脑油中芳香烃的含量。

The aromatic hydrocarbons content in naphtha was analyzed by a chemical reaction method.

youdao

用化学分析方法测定了工业用石脑油中芳香烃的含量。

The aromatic hydrocarbons content in naphtha was analyzed by a chemical reaction method.

youdao