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...
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,...
静电计和一些SMU与电压表一样都具有高输入电阻的特性.Electrometers and some SMUs as voltmeters are characterized by high input resistance.图1-26为典型数字式静电计的方框图.其模拟部分与前面讨论的电路类似.Figure 1 - 26 is a block diagram of a typical digital electrometer.大多数静电计...
她戴罩杯尺寸为D的胸罩.She wears a ` D cup, ie size of bra.她戴罩杯尺寸为d的胸罩.She wears a'D cup, ie size of bra.胸围减去下胸围就是罩杯大小.The difference between the chest and bust measurement is your cup size....
Our host was arrogant and offensive. How his sweet wife could tolerate such a horror was baffling.招待我们的男主人傲慢无礼。真不知道他温柔的妻子怎么能容忍这样一个讨厌的家伙。He put forward a baffling question.他提出了一个难题。a baffling problem使人困惑的问题An apple tree p...
He had been a rock in the shifting sands of her existence.他一直是她曲折坎坷的生活中的主心骨。The sands of his life are fast running out.他的寿命很快将尽.Children enjoy playing on the sands.孩子们喜欢在沙滩上玩耍....
Letters from home were an anchor to him when he worked abroad.他在国外工作时, 家书是他的精神支柱。We dropped anchor in a sheltered spot.我们在一个能够遮风挡雨的地方下了锚。We weighed anchor in the afternoon and started for the Philippines.我们在下午启航,前往菲律宾.Th...