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- Keywords poly（aryl amide）;pendant cyano group;ether group;polycondensation; 聚芳酰胺;氰侧基;醚基;缩聚反应;
- Keywords biphenylyl units;poly（aryl ether ether ketone ketone）;pendant cyano groups;synthesis; 联苯;聚芳醚醚酮酮;氰侧基;合成;
- pendant cyano groups 氰侧基
- Two series of tolan-type liquid crystals containing terminal cyano group were synthesized. 设计并合成了一类新型末端氰基取代含氟二苯乙炔类液晶。
- The factors which would affect the reaction such as solvent, temperature, rectiontime and the mole ratio of cyano group and hydroxylamine were studied. 研究了反应介质、温度、反应时间以及氰基与羟胺的摩尔比对肟化反应的影响。
- By direct cyanidation, the reaction of p-toluic acid with urea would convert the carboxyl group to cyano group to give p - tolunitrile. 本文报道了对甲苯甲酸与尿素反应,进行直接氰化将羧基转变成氰基生成对甲苯甲腈的情况,改进了对甲苯甲酸直接氰化的工艺条件。
- It was pointed out that introduction of cyano group into chain of the energetic binder could improve mechanical properties of solid propellant with it. 分析了3,3双取代氧丁环上两个取代基的类型对其均聚物聚集态的影响,认为在3,3位进行不对称取代可获得液态含能粘合剂。
- A pendant worn on a chain around the neck. 垂饰挂在脖子项链上的垂饰物
- A glass pendant, especially on a chandelier. 玻璃吊灯架玻璃垂饰，尤指枝形吊灯上的
- Do you teach your students singly or in groups? 你教学生是个别地教还是按组教？
- Education should not be restricted to any one specific age group. 教育不应限制在任何特定的年龄组上。
- The investigator will be divided into three groups. 所有的调查员将被分为三个小组。
- A cut-glass object, such as a pendant of a chandelier. 刻花玻璃物体如枝形吊灯的玻璃吊灯架
- He broke away from that lawless group years ago. 他在几年前脱离了那个非法团体。
- My necklace has a heart pendant, but I don't wear it everyday. 我的项链有一个心形的垂饰,但我并非每天都戴它。
- The pendant was set with pearls surrounding an emerald. 这耳坠中间是一块翡翠，四周镶着珍珠。
- The group of barbaric soldiers killed many people. 那群野蛮的士兵杀了很多人。
- The group was made up of doctors. 这个团体是由医生组成的。
- This necklace is with a heart-shape pendant. 这条项链有一鸡心型坠子。
- A group of boys dashed out of the classroom. 一群男孩子从教室里冲出来。
