The new technology resolving the environment polluting problems of the coal-burning industrial boiler was provided.

为解决燃煤工业锅炉的环境污染问题提供了新技术。

youdao

The new technology resolving the environment polluting problems of the coal-burning industrial boiler was provided.

为解决燃煤工业锅炉的环境污染问题提供了新技术。

youdao