She handed him an unmarked card.她递给他一张无标志的卡片。He lies in an unmarked grave at Elmton.他长眠在爱尔莫顿一处无名冢下。Her shoes are still white and unmarked.她的鞋仍然很白,没有任何污渍。Sheringham was unmarked as he met Anderton's free kick and hea...
In the presence of ethanonitrile and glycol, anisole reacts with ammonium ceric nitrate to form o - nitroanisole.在乙腈、聚乙二醇存在下, 用苯甲醚与硝酸铈铵反应合成了邻硝基苯甲醚.The alkylation of anisole with tert - butanol in hexane solution was inve...