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...
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...
Build her up with kindness and a sympathetic ear.用友善和富有同情心的倾听来重拾她的信心。Most were sympathetic once we pricked their consciences.一旦我们使他们良心发现，大多数人还是有同情心的。Tourists are, in the main, sympathetic people.大体说来，游客们都富有同情心。...
她在试图加深画中人面部的颜色.She was trying to shade the face of the man in the picture.因为在重建面部的过程中融入了太多的主观因素?' Cause there's a certain amount of subjectivity involved in recreating a face.受害者们则在医院接受头部和面部的受伤治疗.The victims we...