The highly active catalysts for ethynylation are the key to lower production cost.

因此，采用自行研制的高效乙炔化催化剂是降低生产成本的关键。

youdao

The highly active catalysts for ethynylation are the key to lower production cost.

因此，采用自行研制的高效乙炔化催化剂是降低生产成本的关键。

youdao