The catalyst has little consumption and small secondary pollution, thereby having value of popularization.

本发明的催化剂用量少，二次污染问题小，具有推广的价值。

youdao

The catalyst has little consumption and small secondary pollution, thereby having value of popularization.

本发明的催化剂用量少，二次污染问题小，具有推广的价值。

youdao