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- METHODS:Porphyrins bearingmixed 3-quinolyl/4-pyridylmesogroups were synthesized usingthe Adler-Longo method by condensation of aldehydes with pyr-role,andthenfollowed by methylation andion exchange. 方法:采用Adler-Longo卟啉合成法通过芳香醛和吡咯的缩合反应制得各种组合的3-喹啉/4-吡啶基卟啉碱基,再经甲基化、离子交换得阳离子型卟啉化合物。
- A fine powder produced by condensation or sublimation of a compound. 细粉末由化合物浓缩或升华而得到的精细粉末
- It is not apparent that drops or particles can ever form by condensation. 究竟能不能通过凝结形成液滴或粒子是不清楚的。
- A lawsuit is a method by which persons resolve a dispute. 诉讼是人们解决纠纷的一种方式。
- method by condensation 逆点法
- Study of NMO correction method by optimized sixth-order term. 优化6次项NMO校正方法研究
- METHODS By derivative flame atom absorption method. 方法:采用导数火焰原子吸收法。
- Confirms the feasibility of this method by an example. 并通过算例验证该方法的可行性。
- A lawsuit is a method by which persons resolve adispute. 诉讼是人们解决纠纷的一个方式。
- The system adopts object-oriented design method by VB6. 本文采用面向对象的设计方法,运用VB6。
- Everyone knows the method by which the computer wo rks. 每个人都知道电脑工作的程序。
- A called "178" brightening agent for alkaline zincate bath was prepared by condensation, quaternization. 采用缩合、季碱化及酯化反应研制了一种“178”碱性锌酸盐镀锌光亮剂。
- A method by which a number is represented by its sign and its magnitude. 用数的符号及数的值来表示数的一种方法。
- Methods: Five Schiff bases were prepared from piperonal and diamines by condensation reaction. 目的:合成新的双-胡椒醛缩二胺类席夫碱化合物。
- Preparation of the titled compound by condensation of polyvinyl alcohol with glyoxal was introduced in this paper. 介绍用乙二醛与聚乙烯醇缩合制备缩醛胶的方法。
- Methods By two groups-MTX and TGP. 方法 病人随机分为二组 ,甲氨蝶呤 (MTX)组和帕夫林 (TGP)组。
- Methods:Four Schiff bases were prepared from p-dimethy laminobenzaldehyde and diamines by condensation reaction. 方法:以对二甲氨基苯甲醛和二胺类为原料,经缩合反应,制得4种相应希夫碱。
- Conclusion:p-Hydroxybenzamides glucoside can be synthesized by condensation of p-hydr... 结论:本实验采取的先合成酰胺再合成糖苷的方法是行之有效的方法。
- Select the method by which non-republishing printers should be pruned. 要剪除不重新发行的打印机时,请选择这个方法。
- The processes,characters and uses about the short chain and oligomeric agricultural ammonium polyphosphate are described by condensation method between phosphoric acid and urea. 重点介绍磷酸与尿素缩合法生产农用短链低聚磷酸铵的生产方法、性质、用途。
