查询词典 backbones

Most of the discoveries were simpler life forms known as invertebrate s, or animals without backbones.

发现中的大部分都是较为简单的生活方式，以无脊椎动物为名或是无脊骨的动物。

To solve this problem, based on the concept of graph theory we give a few models and arithmetic designs of virtual backbone in the environment of different application, and propose the corresponding routing mechanism with these virtual backbones. The major achievements are outlined as follows:The state of host's power or the time of host's online plays an important role in keeping stability of a virtual backbone. With a view to this feature, the paper introduces a simple and efficient heuristic algorithm for calculating the virtual backbone by seeking a minimum connected dominating set with maximal weight. The maximality of the weight-based choice of backbone nodes guarantees that the most suitable nodes have been chosen for the role of backbone nodes so that they can properly coordinate all the other nodes and keep stability of the virtual backbone in the network.

为了解决这个问题，本文利用网络图论中的一些理论，在不同的应用环境下给出几种虚拟骨干网的模型、构建及基于稳定性和节能的算法设计，并针对这些骨干网提出相应的分层路由机制，主要研究内容和贡献如下：考虑到主机的功率大小和在线时间长短对虚拟骨干中心的相对稳固性的影响，提出用基于极大权的最小连通支配集模拟虚拟骨干网；并给出其数学模型和相应的启发式算法，确保了性能强的主机担任骨干节点；通过优化规则确保骨干网的极小性，有效地减小了控制分组转发开销；最后进行了仿真验证。

In the first part, we have used hydrogen bonding-mediated rigidified aromatic oligoamide backbones to construct a new molecular tweezer which is appended with two zinc porphyrin moieties.

在第一部分工作中，我们通过分子内氢键驱动的刚性寡聚芳香酰胺骨架构建了一种新型的锌卟啉分子镊。

As there lack a long-time forming course as in western countries, a solid foundation, and the cultural cultivation of the mass, I am worried that such a kind of liveliness and prosperity will not be necessarily able to develop healthily and persistently. Lots of my good friends are the backbones of "Star Art Exhibitions" and "85 Fine Arts New Tide Movement". When they woke up from their ridiculous nightmares, they vented themselves in various manners, and the manner they used most was to mock. They mocked what they hated acridly. The other manners were anger, mourning, puzzling and sadness.

它没有一个像西方漫长的形成过程，没有坚实的基础，更没有对受众的文化培养，因此我担忧这种热闹、繁荣未必能健康持久地发展，我有许多好朋友都是星星美展、八五新潮里的骨干，当他们从荒诞的噩梦里醒来时，便以多种样式去发泄自我，其中最多的是嘲弄，对憎恶的东西进行刻薄的嘲弄，再就是愤怒、痛惜、迷茫、感伤。

Autarchic society lacks the base of political faith. The three backbones of the modern society contain commodity economy, democratic politics and pluralistic values, and provide possible condition for political faith.

专制社会缺乏政治诚信的基础，现代社会得以存在的三大支柱即商品经济、民主政治与多元价值观念的存在则为政治诚信提供了可能性条件。

Xinquan HuTwo new chiral backbones R-- and S--2-amino-2"-hydroxy-4,4",6,6"-tetra methyl-1,1"-biphenyl were synthesized via nitration, diazotation/iodination, Ulhnann coupling, selective reduction, diazotation/hydrolysis, hydrogenation and resolution from 2,4-dimethyl-aniline in seven steps.

以2，4-二甲基苯胺为起始原料，经过硝化反应、重氮化碘代反应、Ullmann缩合反应、选择性双硝基单还原反应、重氮化水解反应、催化氢化反应和拆分，首次合成了--2-氨基-2'-羟基-4，4'，6，6'-四甲基-1，1'-联苯和--2-氨基-2'-羟基-4，4'，6，6'-四甲基-1，1'-联苯两个对映体。

Racemic backbones 2-amino-2'-hydroxy-6,6'-dimethyl-l,l'-biphenyl la and 2-amino-2'-hydroxy-4,4',6,6'-tetramethyl-l,1'-biphenyl 1b were synthesized from o-methylaniline and 2,4-dimethylaniline via nitration, diazotation/iodination, Ullmann coupling, selective reduction, diazotation/hydrolysis and hydrogenation.

从邻甲苯胺及2，4-二甲基苯胺出发，经过硝化，重氮化-碘代，偶联，单还原，重氮化-水解及还原反应合成了消旋体骨架2-氨基-2'-羟基-6，6'-二甲基-1，1'-联苯1a和2-氨基-2'-羟基-4，4'，6，6'-四甲基-1，1'-联苯1b。

Frost will be brought to their backbones and tears to their eyes when our stories are told and retold, So let us go forth, my fellow members of this luckily chosen generation, and meet the new century in victory and glory.

弗罗斯特将提请他们的骨干和泪水的眼睛时，我们的故事被告知和新编，因此，让我们去了，我的同胞成员的一代幸运的选择，满足新世纪的胜利和辉煌。

Two oligosaccharides, a hexasaccharide fragment of group E Streptococcus polysaccharide and a tetrasaccharide repeating unit of E. coli O7: K98: H6, consisting of α-(1→2)-and α-(1→3)-linked rhamnose backbones were synthesized in a regio-and-stereoselective manner.

以三氯乙酰亚胺酯为供体，不保护或部分保护的糖为受体，成功地合成了以α-（1→2）-和-α（1→3）-交替连接的鼠李糖为主链的GroupE Streptococcus六糖和E.coli O7：K98：H6四糖。

The research of Doctor Li Hongye, associate director of Healthy Birth Research Institute and researcher of USA Houston Medical Center, certified that intelligence, emotion and constitution in biothythm are the same with backbone of intelligence, emotion and constitution of human beings; the backbones of both two are located in the upper part of thalamencephalon in the brains; the periods of change are the same.

优生研究所副所长中国科学院博士、美国休斯顿医疗中心研究员黎红晔博土的研究证实，人的生物节律中智力、情绪和体力与人的智力、精力和体力生理变化的活动中枢相同的；二者活动中枢都在人的大脑中的丘脑下部；二者变化周期时间是一致的。

The French are not suggesting a new EU treaty, but they have plenty of other wheezes.

法国人并不是在建议签署一个新的欧盟条约，但他们有许多其他的阴谋。

This letter was written by my brother.

这封信是我弟弟写的。