查询词典 recent developments

In past forty years, ongoing developments and advances have improved the reliability and predictability of dentinal adhesion.

在过去四十年来，牙本质黏著剂不断研究发展，从早期的黏合困难到现今有令人满意的表现，而牙本质的黏著机转与原理也有了较清楚的轮廓。

Owing to the multiplicity and divergence of Gnostic theories, a detailed exposition in this article would be unsatisfactory and confusing and to acertain extent even misleading, since Gnosticism never possessed a nucleus of stable doctrine, or any sort of depositum fidei round which a number of varied developments and heresies or sects might be grouped; at most it had some leading ideas, which are more or less clearly traceable in different schools.

由于多重性和分歧， gnostic理论，详细阐述了在这方面的文章，将不满和混乱，并acertain的程度，甚至误导，因为诺斯底主义从未拥有核心的稳定的学说，或任何形式的depositum信轮，其中的一些不同发展和异端邪说的教派，或可能被归类；最多，它有一些领导的思想，这是更多或更少清楚可追踪在不同的学校。

Owing to the multiplicity and divergence of Gnostic theories, a detailed exposition in this article would be unsatisfactory and confusing and to acertain extent even misleading, since Gnosticism never possessed a nucleus of stable doctrine, or any sort of depositum fidei round which a number of varied developments and heresies or sects might be grouped; at most it had some leading ideas, which are more or less clearly traceable in different schools.

由於多重性和分歧的诺斯底理论，详细阐述本文将不能令人满意，困惑和acertain程度甚至误导，因为诺斯替主义从未拥有核心的稳定理论，或任何种类的信轮depositum了一些不同的发展和异端邪说或教派可能是分组，至多只领先了一些想法，这是或多或少追查清楚在不同的学校。

Whilst these are undoubtedly a step forward, they fall short of the desiderata for complex systems developments.

虽然这些无疑是向前迈进了一步，它们属于短期的desiderata复杂系统的发展。

This work, concentrated on the asymmetric allylation of aldehydes controlled by different chiral auxiliaries prepared from rotational pure tartaric acid, can be divided into three parts.The first part aims to review the developments of chiral drugs and asymmetric synthesis, from which derived the present research topic backgrounds and works.Synthesis and applications of allylation from aldehydes are the second part of the thesis. By optimizing the reaction conditions, such as solvents, temperature, time and chiral auxiliaries like N,N\'-dibenzyl tartamide, N,N\'-p-dimethylphenyl tartamide, N,N\'-o-dimethylphenyl tartamide, N,N\'-o-dichlorophenyl tartamide, N,N\'-a-dinaphyl tartamide, N,N\'-dicyclohexyl tartamide and N,N\'-diphenyl tartamide, ideal experimenttal conditions are obtained according to HPLC monitoring, as well as the auxiliaries\' recoveries experiments. Starting from benzaldehyde and 3-bromopropaldehyde, N,N\'-dibenzyl tartamide is considered the best auxiliary in this reaction.

本文介绍了醛的不对称烯丙基化反应，以光学纯酒石酸为原料，研究了不同构型手性配体在醛的烯丙基化反应中的立体选择性，全文共分三部分十个章节：第一部分对当前手性药物和手性技术进行了概述，并由此展开了本文的研究背景和任务；第二部分为有机合成部分，对醛的不对称烯丙基化反应进行了深入探讨，以苯甲醛为原料对反应条件进行优化，在优化的反应条件下对制备的七种可回收手性酰胺配体(N-苄基酒石酸二酰胺、N-对甲苯基酒石酸二酰胺、N-邻甲苯基酒石酸二酰胺、N-邻氯苯基酒石酸二酰胺、N-a-萘基酒石酸二酰胺、N-环己基酒石酸二酰胺和N-苯基酒石酸二酰胺)进行筛选，优化配体回收实验条件，最终确定出N-苄基酒石酸二酰胺在苯甲醛的不对称烯丙基化反应中具有较大优越性，结晶回收的手性配体光学纯度保持不变。

We also study buman and earth-friendly developments like dissolvable plastic and fuel cell a battery using chemical reaction of hydrogen and oxygen

我们也研究布曼像可溶性塑料和燃料电池地球友好的发展（1电池使用氢气和氧气的化学反应

This paper makes the research on the issues of the future developments of the community sports clubs in China with the methods of the documental materials, interview methods and so on.

本文采用文献资料法、访谈法、个案调查等方法对我国社区体育俱乐部的未来发展进行了研究。

Since Drupa 1995 Nordmeccanica has presented its latest developments with live performances at this International Exhibition in Dusseldorf, Germany.

自1995年德鲁巴Nordmeccanica提出了其最新的事态发展与现场表演在这个国际展览在德国杜塞尔多夫。

Fuji announced last month that it is partnering with the PrintCity alliance at drupa in a project to present the latest developments in workflow techniques and solutions.

富士上个月宣布，它正与联盟的印刷在德鲁巴一个项目，目前的最新事态发展的工作流程技术和解决方案。

The basis of the thesis is depended on free market theory and national economism theory、assisting with the dependent theory and new liberalism focusing on global trend.The peaceful model of interactive developments of both sides which may follow the example of UN will make it possible to form an organization from the Chinese Economical Circle in Asia having the most population on earth to the Community of Asia.

理论基础采自由市场理论及经济国家主义理论为主轴，依赖理论及全球化趋势的新自由主义作为研判趋势之参考值，两岸和平互动的发展模式，效仿欧盟模式统合之殷切期盼，使拥有占全球人口数最多的亚洲地区，从华人经济圈的形成逐步扩大到亚洲共同体的理想得以实现。

Don not attempt to do something which you can not to do.

不要企图做那些办不到的事情。

The expression of CTGF and TNF-αweredetected by immunochemistry and the number of Clara Cells was calculated.

光镜下观察肺组织的病理变化，采用免疫组化染色观察肺组织中结缔组织生长因子和肿瘤坏死因子-α的表达和Clara细胞的数量。