This archaic process of sulfuric acid making enjoys a history of more than 500 years up to now.

这种最老的制取硫酸的方法距今已有五百多年历史了。

youdao

This archaic process of sulfuric acid making enjoys a history of more than 500 years up to now.

这种最老的制取硫酸的方法距今已有五百多年历史了。

youdao