The Octane Number is retained owing to HZSM 5 � � s excellent ability of aromatization, isomerization and alkylation.HZSM-5沸石对汽油的降烯烃作用得益于其优异的芳构化 、 异构化和烷基化性能.These derivatives are readily obtained by alkylation of 2 - mer...
My sister speaks Cantonese very fluently.我姐姐广州话说得很流利.His father was an actor in the Cantonese Opera Company...他的父亲是粤剧团的演员。Cantonese food emphasizes braising, roasting, frying and deep frying.广东菜着重炖 、 烤 、 煎和炸.But I feel a...
The surface corrosion was worst where the paint had flaked off.油漆剥落的地方表面腐蚀最为严重。They can see how its colours have faded and where paint has flaked.他们能看到颜色消退的情况以及油漆剥落的地方。The river from end to end was flaked with coal fleet...