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...
The heron flapped slowly off across the lake.那白鹭振翅向湖对岸慢慢飞去.Heron also translated much of the Greek geometrical algebra into arithmetic and algebraic processes.Heoom又把不少希腊的几何代数法翻译成算术和代数步骤.ELAINE HERON : When I came to Bel...
Owen was against it, on the grounds of expense.欧文因费用问题对此表示反对。I'll try to save him the expense of a flight from Perth.我会设法替他省下要从珀斯飞来的机票费用。He put Elizabeth's motel bill and airfare on his expense account.他将伊丽莎白住汽...
to fumigate a room用熏蒸的方法给房间消毒As preventive, spray plants with systemic insecticide or fumigate them regularly.作为预防措施, 要用内吸杀虫剂对植物定期喷洒,或熏蒸.Fumigate wood packaging has been exported to countries around the world.熏蒸木包装已远销世界各...