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...
Eczema is a common skin complaint which often runs in families.湿疹是一种常见的皮肤病，通常具遗传性。He has a simplistic view of the treatment of eczema.他对湿疹治疗的看法过于简单化。He grew out of his eczema as he got older.他长大后湿疹就好了....