Unlike ethernet , fddi is designed in an orderly ring structure , where devices pass data to one another in a large ring 与以太网不一样， fddi采用顺序的环形结构设计，在该结构中，各设备在一个大环中互相传送数据。
Calixarenes , cyclic oligomer of phenol - formaldehyde condensates have attracted great interest in supramolecular chemistry due to their peculiar molecular recognition ability 作为第三代超分子大环化合物的代表，杯芳烃具有特殊的分子识别能力和独特的结构易修饰性。
Calixarenes , cyclic oligomer of phenol - formaldehyde condensates have attracted great interest in supramolecular chemistry due to their peculiar molecular recognition ability 摘要作为第三代超分子大环化合物的代表，杯芳烃具有特殊的分子识别能力和独特的结构易修饰性。
Objective to evaluate the antibiotic susceptibility of neisseria gonorrhoeae epidemic strains to macrolides in hengyang and provide a referrence for the prevention and treatment of gonorrhea 摘要目的了解淋病奈瑟菌流行株对大环内酯类药物的敏感性，为淋病的防治提供实验依据。
Results of all these 4 macrolides , the higher susceptibilities to gonococci were azithromycin and roxithromycin , in turn , the percentages of susceptibility were 100 % , 96 . 04 % , respectively 结果在测定的4种大环内酯类药物中，淋球菌对阿奇霉素敏感性最高，达100 % ；其次为罗红霉素，为96 . 04 % 。
Bioinorganic chemistry : development of the concept of symmetry switch ” by studying nonplanar metalloporphyrins as models to elucidate the biological consequences of macrocycle deformation on hemoproteins 生物无机化学：以非平面金属的模型研究，探讨血红素蛋白中大环变形对其生物功能之影响，并从而建立?对称开关?的概念。
Supramolecular chemistry of shape - persistent arylene ethynylene macrocycles , including aggregation , host - guest chemistry , liquid crystal behavior and 2d , 3d supramolecular structures is reviewed in this article 摘要重点介绍具有纳米尺寸的苯炔刚性大环的超分子化学：包括聚集效应，主客体化学、液晶行为及二维、三维超分子结构等。
Phalocyanines are a kind of centrosymmetric planar organo - metallic molecules with an extensively delocalized two dimensional conjugated - electron system which show a relatively large third order optical nonlinearity , varying upon central metal atom substitution and other factors 金属酞菁配合物是一种具有平面共轭电子结构的大环配合物。研究表明，酞菁配合物在可见及近红外波段具有良好的非线性光限幅性能。
This article gives a review on the progress of the recognition and complexation between cucurbiturils as a noval macrocyclic host compound and metal ion , including the synthesis methods of supermolecular adducts , crystal structures , thermodynamics of binding and potential applications 摘要概述了新一代大环主体化合物南瓜尼与金属离子的识别及配合作用的研究进展，包括其超分子配合物的合成方法，晶体结构，键合的热力学性质及其应用前景。
Ii analysis of veterinary drug residues in raw milk . testing parameters include aminoglycosides , - lactams , macrolides , polypeptides , quinolones , sulfonamides , tetracyclines , lincomycin , spectinomycin , trimethoprim , chloramphenicol and synthetic hormones . the laboratory maintains its accreditation status on the tests for pesticide residues in vegetables and veterinary drug residues in milk under the hong kong laboratory accreditation scheme Ii测试未经加工的奶类所含残馀兽药，包括是否含有氨基糖类类药物-内胺类药物大环内脂类药物多类药物诺酮类药物磺胺类药物四环素类药物林可霉素大观霉素甲氧苄氨嘧啶氯霉素和人造激素。
