以正庚醛 、 硫代硫酸钠和溴代正丁烷为原料,合成了正庚醛正丁硫醇缩醛.The heptanal butyl mercaptan was synthesized with heptanal, sodium thiosulfate and 1 bromobutane as raw materials.目的研究以庚醛和原甲酸三乙酯为原料制备庚醛二乙缩醛的工艺条件.Aim Enanthal diethyl acetal is prepared ...
The first plane-loads of food, children's clothing and medical supplies began arriving.首批飞机运送的食物、儿童衣物和药品开始抵达。A technician loads a video tape into one of the machines.一名技师把一盒录影带装进其中一台机器。Having loads of children takes...
不要使婴儿的颈部过伸.Do not hyperextend infant's neck.Levine - Edwards分类有待改进,应增加旋转和侧屈及过伸一分离损伤机制.Levine - Edwards classification will be expanded by the rotation and extension - distraction forces for the injury mechanism.目的:比...
The reintroduction of conscription sparked off a major rebellion.再次征兵引发了一次大规模的暴乱.He was rejected by the conscription office because he was under age.征兵办公室没有接受他,因为他还未成年。All adult males will be liable for conscription.所有成年...
The sound veers between jazz and countrified blues.音乐在爵士乐和乡村布鲁斯乐之间来回转换。The car veers out of control.这辆车失去了控制.His fondness for his characters sometimes veers towards the sentimental.他对那位主人公的偏爱有时也稍显矫情....
Such readings can reveal longer - period deformations in the earth.这种读数可以反映地球 长周期 的形变.We discuss in more detail the application of the coupledmode formalism to scalar waveguide deformations.我们将详细讨论耦合模公式对标量波导畸变的应用.Without...