等环的

Mesh and plug hernial ring tension-free repair has the characteristic of shorter peri...

疝环充填式无张力斜疝修补术具有手术时间短、术后恢复快、并发症少等优点，是治疗腹股沟斜疝的理想术式。

The control system for parallel-type double inverted pendulumthat features multi-variable,strong coupling,hish order and absolutely unstable in open loop,is studied.

赵万青，魏利胜，费敏锐研究了一种具有多变量、强耦合、高阶次和开环绝对不稳定等复杂特性的双并联倒立摆控制系统。

But the six-membered α-hydroxylactone of CPTs can hydrolyzed to its inactive carboxylate form readily at physiological pH.

但是，喜树碱的六元α—羟基内酯环在体内易水解，且存在毒性较大、具有种属差异等不足。

In searching for novel and high active fungicides with pyridyl moiety, with Dimethomorph as a model compound and isonicotinic acid as the main starting material, twenty-seven title compounds were designed and synthesized through chlorination, Friedel-Crafts acylation, Wittig-Horner reaction and other steps. All the target structures were confirmed via 1H NMR and elementary analysis.

为了寻找具有高活性的含吡啶杂环杀菌剂，以烯酸吗啉为模板化合物，以异烟酸为起始原料，通过卤代反应、Friedel-Crafts酰基化反应、Wittig-Homer反应等，将吡啶－4-基或2-氯吡啶－4-基引入到模板结构中，设计合成了27个4-［3-（吡啶－4-基）－3-取代苯基丙烯酰］吗啉类化合物，其结构通过1H NMR和元素分析确证。

An isonitrile ligand, 2 methyl cyclohexylisonitrile is synthesized and a copper salt Cu(I 4BF 4 of this ligand is also prepared. The isonitrile and its copper salt are characterized by IR and elemental analysis.

合成了一种新的异腈配体 2 甲基环己基异腈及其铜络盐，并经红外光谱和元素分析等表征予以确认。

Liu Yakang Lu Jianmin He Jianyun Jin Guantai College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029

引言 环氧基型丙烯酸粉末涂料，通常所采用的固化剂主要有：壬二酸、癸二酸、十二二酸及二十二酸等［1］。

Through the author 's research in rural areas' of Dongting Lake area, found that many rural areas are of laking of industrial structure'feature, the level of infrastructure is undeveloped, the custom is fall behind,the democratic system isn't perfect and so on.

笔者通过对环洞庭湖地区农村进行实地调研，发现许多农村存在产业结构缺乏特色、基础设施水平不高、乡风文明陈旧滞后、生态环境破坏严重、民主制度不够健全等五个方面的问题。

IUD is the most widely used intrauterine device method for women of child bearing age. But it can cause side reactions such as hyper-menorrhea and menostaxis, etc.

育龄妇女放置宫内节育器是临床上最常用的避孕方法，但置IUD后可致月经量多，经期延长等出血副反应，即&宫环出血&[1]。

TUD is the most widely used intrauterine device method for women of child bearing age . But it can cause side reactions such as hyper-menoirhea and menostaxis, etc .

育龄妇女放置宫内节育器是临床上最常见的避孕方法，但置IUD后可致月经量多，经期延长等副反应，现多称为&宫环出血&。

H52-62 micaceous ferric oxide epoxy anti-corrosive coating is consisting of epoxy resin, micaceous ferric oxide, filling agents, aids and other materials. It is two components coating.

H52-62环氧云铁防腐漆是由环氧树脂、云母氧化铁颜料、填料、助剂等材料组成的双组份涂料。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。