A synthetic method of principal component analysis ( pca ) and cluster analysis is presented to evaluate and classify the regional logistics development in provincial logistics planning 摘要提出利用主成分聚类分析的方法对省域物流规划中各地区的物流发展进行综合评价并分类。
This paper reviewed the application of the template effect in thesynthesis of macrocyclic compounds and synthetic methods of macrocyclic compounds with different donors 介绍了戊二醛的生产方法及其在消毒杀菌、石油开采、冷却水处理、有机合成等方面的应用,并展望了其市场前景
This paper reviewed the application of the template effect in thesynthesis of macrocyclic compounds and synthetic methods of macrocyclic compounds with different donors 介绍了氯化石蜡- 70的制备方法、用途以及国内外生产和市场前景.针对我国氯化石蜡- 70行业存在的问题提出了发展建议
This paper reviewed the application of the template effect in thesynthesis of macrocyclic compounds and synthetic methods of macrocyclic compounds with different donors 介绍了聚丙烯酰胺的生产方法和应用情况,分析了国内外聚丙烯酰胺的生产和消费情况,并对我国聚丙烯酰胺的市场前景作了展望
Synthetic methods for lh - indazole - 3 - carboxylic acid were reviewed and evaluated . several new method studies carried out by the authors were introduced as well . 28 references were quoted 综述了1h -吲唑3 -羧酸的合成方法，并评述了其优缺点；同时介绍了作者在寻找其新合成方法中的一些探索。
In this dissertation , valuable researches have been carried out to the exploration of new synthetic methods in solution phase , and controlled syntheses of metal selenides and tellurides 本论文在硒碲化合物半导体纳米材料的化学合成新途径及其调控合成方法等方面做了很多有益的探索性研究。
This paper reviewed the application of the template effect in thesynthesis of macrocyclic compounds and synthetic methods of macrocyclic compounds with different donors 菲是煤焦油重要组分之一( 5 ) .对菲的重要利用途径- -菲的氧化进行了总结,介绍了主要氧化产品的应用及对各种氧化方法进行了综述
This paper reviewed the application of the template effect in thesynthesis of macrocyclic compounds and synthetic methods of macrocyclic compounds with different donors 介绍了二氯异氰尿酸钠的生产方法、国内外生产情况以及在饮用水、工业循环水、羊毛防缩、洗涤用品和纺织工业漂白等方面的应用情况
This paper reviewed the application of the template effect in thesynthesis of macrocyclic compounds and synthetic methods of macrocyclic compounds with different donors 介绍绿色化工产品碳酸二甲酯的性质、应用、合成方法及其新进展,对国内生产市场概况以及它在有机合成领域的应用近况也作了较详细论述
An evaluation method based on fuzzy - probability synthetic method was established for the evaluation of the healthy status and the determination of proportion of rivers with different healthy status 提出了基于模糊概率的河流生态系统健康评价方法，以反映河流健康状况以及不同健康状况河段所占的比例。
