This paper discussed three methods of producting vinyl etherspreparation from acetylene, dehydrohalogenation and acetals.论述了乙烯基醚类化合物的三种主要制备方法乙炔法 、 脱卤化氢法和缩醛热分解法.Allene is an isomer of methyl acetylene.丙二烯是甲基乙炔的一种异构体.In th...
Allene is an isomer of methyl acetylene.丙二烯是甲基乙炔的一种异构体.In the darkness, the machine gun spat a vindictive white light like an acetylene torch.机枪在黑暗中吐出一道凶厉的白光,活象一支喷火的乙炔吹管.In the high - pressure system both oxygen and acet...
It overflows with soft sighs all whisper to you.我要对你无限轻声叹息.'So what do you think?' she said in a hoarse whisper...“那么你认为如何？”她声音嘶哑地悄声问道。When these breezes reached the platform the palm - fronds would whisper.微风吹...
Adenoviruses are the only enteric viruses that contain a DNA core.腺病毒是唯一含有DNA核心的肠道病毒.Enteric anastomoses may disrupt and produce a fistula and peritonitis.小肠吻合可能破裂并产生瘘管和腹膜炎.There is, however, a wide variation in the resi...
风门的调速与飞机螺旋桨的转动精确同步.The timing of the gun was precisely synchronised with the turning of the plane's propeller.风门的调速与飞机螺旋桨的转动精确同步。The timing of the gun was precisely synchronized with the turning of the plane's ...
She stamped out the letters'sOS'in the snow.她用脚在雪地踩出'sOS'这三个字母.The ferry did not even have time to send out an SOS.渡船甚至连发出紧急呼救信号的时间都没有。to send an SOS发出紧急呼救信号So they were asked to draw their SOS famili...
The equator is an imaginary line around the middle of the earth.赤道是一条假想的环绕地球腰部的线。The unicorn is an imaginary beast.独角兽是幻想出来的动物.All the characters in this book are imaginary.此书中的所有人物都是虚构的....
Was Othello fated to kill Desdemona, or did lago create the circumstance?奥赛罗注定要杀死苔丝狄蒙娜 吗 ?还是拉戈创造了环境?A pocos minutos andando del parque del Lago Verde est á el parque Yuatong.从翠湖公园步行几分钟就到了圆通公园.Also, there is a tour of the...