Reactor embodiments for the fluorination reactions are also disclosed.还公开了氟化反应反应器的具体实施方式.Low cost 3, 4 - difluoro nitrobenzene was prepared from 2, 4 - dinitrochlorobenzene by two - step fluorination.二硝基氯苯经二步氟化反应,制得低成本3,...
The isocyanates can be obtained by the fluorination of nitrogenous cylic or acyclic molecules.异氰酸酯可由含氯的环(或非环)状分子氟化而得.A heavy - duty magnetic stirrer , such as Cole - Parmer model is needed during the fluorination.在氟化过程中需...
She was crucified by the critics for her performance.她的表演受到评论家的尖锐批评。They scourged him and crucified him upon a tree.他们折磨他,把他成十字形地钉死在一棵树上.The critic crucified her performance.该评论家说她的演出糟透了....
'What is the matter with Signora Anna?' he whispered, horror-struck at her vacant face.“安娜夫人怎么啦？”他惊恐万分地看着她那失神的脸小声问道。He whispered that he had got a new job.他低声说他已找到了新工作。'I thought you and I were going to sp...