查询词典 literatures

Due to the ability of the bivalent magnesium cation to form stable chelate complexes with carbonyl compounds,magnesium methylate for example is used as a selective carbonyl condensing agent.Three synthesis routes was proposed based on literatures and comprehensive comparison with other ways.First,Magnesium methylate is prepared by reacting magnesium metal with dry methanol.The magnesium salts of higherprimary alcohols,i.e.alcohols with ≥ 2 carbon atoms,do not react directly with pure alcohols under normal conditions.In fact catalysts are required to set the reaction in motion and the preparation is performed under pressure at the higher temperatures.

一、直接合成法：本文将镁与无水甲醇直接反应制得甲醇镁；"更高级"的醇(比如C≥2的醇)在无催化剂的条件下无法直接和镁进行反应，本文以CCl_4为催化剂将无水乙醇与镁直接反应制得乙醇镁，但是以原甲酸三乙酯为催化剂无水乙醇与镁无法反应；不论是以CCl_4为催化剂还是以原甲酸三乙酯为催化剂，丙醇均无法与镁直接反应。

The clinical data of a pregnant woman with acute miliary tuberculosis were analyzed and relevant literatures were reviewed.

分析我科收治的1例妊娠合并急性粟粒性肺结核患者的临床资料，并复习相关文献。

The Enneper's minimal surface is the unique cubic parametric polynomial minimal surface one can find and one can not find any high order polynomial minimal surface in the differential Geometry literatures.

极小曲面被广泛应用于建筑设计，飞机轮船制造业，在结构化学，材料科学，植物学，动物学等领域被用作各种模型，在这些应用领域已有很多文献出现，但是，在CAGD领域几乎还没有关于极小曲面造型方面的工作。

The purport of the dissertation tries to conclude the literatures about monopsony in the theory of Industrial Organization for the first time, and classify the measure method of monopsony.

在论文中结合我国的经济现实状况，分析了我国转轨经济体制背景下存在的具有行政属性的买方垄断现象。

Today the research on MUF and PMUF resins around the world has just begun and few summary scientific literatures on their structure formation and mass fraction have been published.

目前国内外对MUF和PMUF树脂的研究工作才刚刚起步，有关它们的结构形成及分子组分的研究均未见系统的文献报道。

Methods appeared in literatures assume that the multiple time series are synchronous, but in the real world, that is not always satisfied, in most cases they are non-synchronous.

已知文献所提供的方法均假设多时间序列是同步的，但是，在现实世界中，这一条件并不总能满足，许多情况下它们是非同步的。

They are dislodged by new industries, whose introduction becomes a life-and-death question for all civilised nations…In place of the old wants, satisfied by the production of the country, we find new wants, requiring for their satisfaction the products of distant lands and climes…National one-sidedness and narrow-mindedness become more and more impossible, and from the numerous national and local literatures there arises a world literature.

它们被新的工业排挤掉了，新的工业的建立已经成为一切文明民族的生命攸关的问题……旧的、靠国产品来满足的需要，被新的、要靠极其遥远的国家和地带的产品来满足的需要所代替了……民族的片面性和局限性日益成为不可能，于是由许多种民族的和地方的文学形成了一种世界的文学。

As many literatures showed, the development of NID is related to the innovative advantage of clustering.

许多研究表明，产业集群的发展与集群的创新优势分不开。

As Henrik Cronqvist and Mattias Nilsson (2002) said, there were a lot of literatures about the refinancing of listed companies but rarely about the specific choice of ways to refinancing.

但是，正如Cronqvist and Nilsson(2002)所言，学界研究上市公司再融资的文献很多，但具体到再融资方式选择方面的研究极少。

This paper also establishes two basic or extreme forms and a medium structural form of the supply chain by reviewing the relative literatures. It is pointed out that the complete integrated supply chain, one of the two basic forms, is noneffective, while the potential efficiency of the complete competing market or network, the another one of the two basic forms, is usually unavailable.

接着，本文确立了供应链结构的两种基本范式和中间范式，并指出，作为基本范式之一的完全一体化的供应链是无效的，而另一个基本范式—完全竞争的市场和网络范式的有效性一般不易获得，只有介于两种基本范式之间的半一体化的供应链其效率水平是可以接受的，从而也是最常见的。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。