whose代表什么?《石油化工英语文选》之一? coke formation is due to olefinic and diolefinic compounds whose formation will be influenced unfavourably by a decrease in temperature, an increase in pressure and ratio h2/hc. 烯烃和二烯烃化合物是造成结焦的原因,可通过降低温度、增加压力和提高氢烃比来减少结焦的生成。 二烯烃容易发生自聚合反应,生成大分子量的有机物,温度升高时,聚合反应加剧,生成结焦前体物,温度高到一定程度,即可脱氢生成[wiki]焦炭[/wiki] [ ]查看更多