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Pillared montmorillonite, as a representative of Sandwich like pillared interlayered clays ,caught many scientist"s attention not only because of its special structure of two-dimensional sheets but also its excellent activity of catalysis and adsorption. It is well documented that the method to prepare PILM, ion-exchanging, needed a long periods and was affected by many factors, and that the product had low thermal stability especially hydro-thermal stability which was the primary obstruction of its using in large-scale production. At the same time, PILM was well documented prepared with Na-montmorillonite, while there were a few documents about PILM prepared with Ca-montmorillonite. The large cost of remodel of Ca-montmorillonite to Na-montmorillonite was another obstacle of the application of PILM, while Ca-montmorillonite was widely distributed in nature, as a result, to prepare PILM with Ca-montmorillonite has practical significance. What"s more, PILM was mainly studied as a catalyst in oil refining process till now, but rarely documented in other catalysis reactions, especially in coal liquification filed which also needed high activity catalyst.

以柱撑蒙脱石为代表的具有"三明治"结构的柱撑粘土矿物因其特殊的二维孔道结构和优良的催化和吸附性能近年来成为国内外广泛关注和研究的热点,但是目前国内外大量报道的PILM制备大多采用离子交换法,生产周期很长,影响因素很多,并且产物热稳定性不够高,特别是水热稳定性较差,这是其不能在实际大规模生产和应用的主要障碍,因此制备一种高稳定性的PILM意义非常;文献大量报道的都是钠基蒙脱石合成的柱撑粘土矿物,传统的离子交换法必须将钙基蒙脱石钠化改型,其成本相当高,而自然界大量存在的却是钙基蒙脱石,直接用钙基蒙脱石合成柱撑粘土矿物有很现实的意义,但目前这方面的报道却很少见;另外,迄今为止,PILM作为催化剂的研究领域主要在石油的炼制应用,而在煤炭的液化却鲜有报道,如果能在煤炭转化领域应用这一成果,其影响也将是相当大的。

Pillared montmorillonite, as a representative of Sandwich like pillared interlayered clays ,caught many scientist's attention not only because of its special structure of two-dimensional sheets but also its excellent activity of catalysis and adsorption. It is well documented that the method to prepare PILM, ion-exchanging, needed a long periods and was affected by many factors, and that the product had low thermal stability especially hydro-thermal stability which was the primary obstruction of its using in large-scale production. At the same time, PILM was well documented prepared with Na-montmorillonite, while there were a few documents about PILM prepared with Ca-montmorillonite. The large cost of remodel of Ca-montmorillonite to Na-montmorillonite was another obstacle of the application of PILM, while Ca-montmorillonite was widely distributed in nature, as a result, to prepare PILM with Ca-montmorillonite has practical significance. What's more, PILM was mainly studied as a catalyst in oil refinin g process till now, but rarely documented in other catalysis reactions, especially in coal liquification filed which also needed high activity catalyst.

以柱撑蒙脱石为代表的具有"三明治"结构的柱撑粘土矿物因其特殊的二维孔道结构和优良的催化和吸附性能近年来成为国内外广泛关注和研究的热点,但是目前国内外大量报道的PILM制备大多采用离子交换法,生产周期很长,影响因素很多,并且产物热稳定性不够高,特别是水热稳定性较差,这是其不能在实际大规模生产和应用的主要障碍,因此制备一种高稳定性的PILM意义非常;文献大量报道的都是钠基蒙脱石合成的柱撑粘土矿物,传统的离子交换法必须将钙基蒙脱石钠化改型,其成本相当高,而自然界大量存在的却是钙基蒙脱石,直接用钙基蒙脱石合成柱撑粘土矿物有很现实的意义,但目前这方面的报道却很少见;另外,迄今为止,PILM作为催化剂的研究领域主要在石油的炼制应用,而在煤炭的液化却鲜有报道,如果能在煤炭转化领域应用这一成果,其影响也将是相当大的。

Aimed at solving the problem that high content of unburned carbon in fly ash is unfavorable for its comprehensive utilization in large scale, the fundamental principle of flotation for recovery of unburned carbon from fly ash was theoretically analyzed and the full flotation flow for the recovery of unburned carbon from fly ash was tested.

针对粉煤灰未燃炭含量过高不利于大规模综合利用的问题,从理论上分析了浮选回收粉煤灰未燃炭的基本原理,采用全浮选流程对粉煤灰未燃炭进行了浮选回收试验,探讨了影响粉煤灰未燃炭浮选效果的主要因素,确定了适宜的工艺条件。

Based on the occurrence of feud tracks in the Upper Red Formation, a Late Miocene age can be approved for the track-bearing strata, while proboscidean tracks which occur within Paratethyan deposits in the north of the country suggest a maximum age of earliest Miocene for those levels.

根据上红组发现的猫科动物足迹,可认为产足迹的地层年代为晚新世,而产于伊朗北部古地海边缘区沉积的长鼻类足迹显示,地层的最大年龄为新世最旱期。

This implies the existence of a polynomially bounded algorithm to find a shortest contractible cycle, a shortest separating cycle, and shortest cycle in an embedded graph in the projective plane and answers the open problems raised by Mohar and Thomassen in the case of projective plane embedded graph.

另一方面,通过定义嵌入图的几何对偶图及其相应的嵌入系统,得到几何对偶图的可分离圈就对应于原图的割;反之,若几何对偶图的割在原图对应于一个圈,那么该圈一定可分离。

Having combination of the theory of truth degree in metrology of logic with the theory of ∑-α-tautologies in fuzzy logic, which have been introduced by professor G.J.Wang, the theory of ∑Γ-truth degree was introduced, and its properties which induce a pseudometric on F were investigated. The results gained have complemented and enhanced the original theory, and the work delivers a new frame for fuzzy reasoning.

将模糊命题逻辑的∑-α-重言式理论与计量逻辑学的真度理论相结合,在经典二值命题演算系统L引入了公式相对于有限理论的∑Γ-真度理论,较为详细地讨论了它们的性质,并利用∑Γ-真度的性质在公式集F上引入了ρΓ-伪距离,对原有的理论进行了加强和补充,为在模糊命题逻辑系统的有限理论讨论结论的程度化问题奠定了基础。

This thesis tries to introduce translator's subjectivity applied in the translation of english film titles with concrete examples from the following aspects: the importance of the translation of english film titles, the methods of the translation of english film titles, translator's purposiveness applied in the translation of english film titles, translator's autonomy applied in the translation of english film titles, translator's activity applied in the translation of english film titles and translator's creativity applied in the translation of english film titles.

因此本文试着从影视片名的重要性,影视片名翻译的标准和方法,译者的目的性在影视片名翻译的应用,译者的自主性在影视片名翻译的应用,译者的能动性在影视片名翻译的应用和译者的创造性在影视片名翻译的应用等方面说明译者主体性在影视片名翻译的应用。

Of the 54 cases,there were 46 cases of affected ureteral disappearance in IVU,8 cases of affected ureteral varicosis in pyelography,3 cases of hyperplasia of prostate in B ultrasonography,4 cases of affected renal function descended in RNI.

有46例在静脉尿路造影检查患侧输尿管不显影或显示不清,8例在逆行肾盂造影有患侧输尿管迂曲,3例在B超检查有前列腺增生症,4例在放射性核素显像检查有患侧肾功能下降。

In the process of building up the system, all the following works are done: confirming the index system of the gas pipeline by the maximum quadratic mean deviation analysis, caculating the index weight by the means of AHP, bringing forward three easy and useful methods (TOPSIS, the effect function and the integration index) of the gas pipeline's engineering schemes' multi-valuation and at last the mathematical models of the maximum compatibility degree is introduced to integrate all the results of all methods above.

在构建这个系统的过程,主要从事了以下一些工作:通过统计理论的最小均方差法分析确立了输气管道指标体系;采用层次分析法对输气管道指标权重进行了分析计算;提出三种简单易行的用于天然气管道设计方案评价的新方法:理想点法、效用函数法和综合指数法;最后将决策理论的最大兼容度模型用于输气管设计方案评价

Real time PCR was undertaken to quantitate the AQPs gene mRNA expression.

本文的研究目的为: 1判定AQPs基因是否在羊胎肺表达以及在其胎肺发育的表达模式; 2确定AQPs基因在羊肺的表达分布; 3研究在引起胎肺液体动力改变的生理模型胎肺AQPs基因表达的变化。

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推荐网络例句

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面,更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值,分为几个相等的区间作为横轴,并将各区间内所测定值依所出现的次数累积而成的面积,用柱子排起来的图形,也叫做柱状图。

You rap, you know we are not so good at rapping, huh?

你唱吧,你也知道我们并不那么擅长说唱,对吧?