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...
被疯狗咬伤会致死的.The bite of a mad dog is fatal.萨维斯 讨论了针叶树的致死的基因性质.Sarvas discusses the nature of the " lethal load " in conifers.这个象炼狱般的地方将一缕致死的放射性同位素喷入大气层.The inferno spewed a deadly plume of radioactive isotopes into the atm...
He propped his elbows upon a greasy counter.他的双肘撑在满是油污的柜台上。People suffering from dysentery must avoid raw , cold or greasy food.得了痢疾忌讳吃生冷油腻食物.Dampproof, dustproof and defending greasy dirt and harmful gas, sealing strong...
A penumbra of doubt surrounds the incident.疑惑的阴影笼罩着该事件((真相不明)).In additional, the luminance step is applied to detect the penumbra.另外, 提出了亮度步长的方法来检测阴影中的半影.Traditionally, the word wangliang has three different meanings pe...
I myself enjoy cinema, poetry, eating out and long walks.我本人喜欢电影、诗歌、外出吃饭和远途散步。Her editors wanted her to cut out the poetry from her novel.编辑们想让她把这首诗从她的小说中删去。His music is purer poetry than a poem in words.他的音乐比真正的诗歌更具诗意。...