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- 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。
- Keywords poly(aryl amide);pendant cyano group;ether group;polycondensation; 聚芳酰胺;氰侧基;醚基;缩聚反应;
- 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。
- He broke away from that lawless group years ago. 他在几年前脱离了那个非法团体。
- Synthesis and Mesomorphic Properties of Tolan-type Liquid Crystals Containing Terminal Cyano Group 末端氰基取代含氟二苯乙炔类液晶的合成与相变研究
- 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。
- A group of boys dashed out of the classroom. 一群男孩子从教室里冲出来。
- I come upon a group of children play in the street. 我遇到一群孩子在街上玩耍。
- He goes about with a group of nice boys. 他经常和一群好孩子在一起玩。
- He is a the most brisk young man in this group. 他是这个小组中最活跃的年轻人。
- He showed me a photo of a family group. 他给我看一张合家欢的照片。
- Keywords N acetyl 5 methoxytryptamine;electro catalysis;reduction of cyano group; 乙酰基-5-甲氧基色胺;电催化;腈基还原;
- The chief accountant of a manufacturing group. 一个制造业集团的总会计师。
- The hunting group had good sport today. 今天打猎小组满载而归。
- I stand out in a group interview. 在集体面试中脱颖而出。
- He looked around the small group of mourners. 他环顾一下那一小群的送葬者。