Copper - containing catalysts are the most suitable catalysts for producing 1, 2 - propanediol through catalytic hydrogenolysis of glycerol.对甘油催化氢解制取1, 2- 丙二醇效果最好的是含铜的催化剂....
It was imperative that he act as naturally as possible.最重要的是他要做到尽可能自然。With football, it was just something that came naturally to me.说起踢足球，对我来说再容易不过。When things go wrong, all of us naturally feel disappointed and frustra...