activity decline meaning in English
活性下降
Examples
- Businesses too had to face enormous challenges as deflation deepened , consumer spending shrank and business activities declined
工商界面对的挑战也不少，例如通缩恶化、消费开支萎缩、生意低迷。 - Businesses too had to face enormous challenges as deflation deepened , consumer spending shrank and business activities declined
工商界面对的挑战也不少，例如通缩恶化、消费开支萎缩、生意低迷。 - The initial activity of pt / tio2 was higher than that of tio2 because it restrained the recombination of electron and hole with supported pt , however the regenerated ability of the pt / tio2 was lower than that of tio2 . after the regeneration , the activity could come back to some 60 % of the original activity and the reaction activity declined rapidly . the reason might be that after regeneration on the surface of pt / tio2 the incomplete oxidation of h2s to produce s was enhanced
Pt tio _ 2催化剂的初活性比单一的tio _ 2催化剂的初活性高，这是因为担载的贵金属抑制了电子与空穴的复合，但其再生性能比tio _ 2差，再生后活性只能恢复到初活性的约60 ，且反应活性迅速降低，这可能由于在再生后的pt tio _ 2表面上， h _ 2s通过不完全氧化生成s ~ 0的反应增强所致。