查询词典 sieves

The conclusion was drawn by the synthesis of molecular sieve: after mixed soluble glass and aluminium sulfate with proper proportion under room temperature, it was stirred stormily to react. And then we mixed with potassium hydroxide solution after filtrating. At last, the molecular sieves of potassium type was synthesized after the mixture reacted in the oven or autoclave for 24 hours. The molecular sieve was remodeled more than twice with ammonium chloride solution that the concentration was 3mol/L and then remodeled twice with the saturated sodium chloride solution. Finally the molecular sieve was changed into the sodium type. It was named W zeolite.

通过对分子筛的合成得到：以泡花碱、硫酸铝为原料，以硅铝比按一定比例于室温下将二者混合，激烈搅拌，抽滤后与氢氧化钾溶液混合放于烘箱或高压釜中高温晶化24小时，晶化后的分子筛为钾型，先后用3mol/L氯化铵溶液和饱和食盐水各对其改型两次以上，最后改为钠型，可制得W型沸石分子筛。

Moreover, mesoporous molecular sieves as"solid solvate"provide good microenvironment for eosin Y.

结果表明，膜和粉体组装体具有良好的发光性能，介孔分子筛作为eosin Y的良好"固体溶剂"为其单分散提供了有利的微环境。

In this paper, the sorption of molecular sieves was investigated by experimental and molecular simulations.

目前，关于客体分子在AlPO〓-5分子筛中吸附的理论研究很有限。

The particles are passed through sieves of desired mesh size, and a number of particles are separated into two groups--an oversize and an undersize.

在句译、词译中专业词汇在线翻译、专业词典词汇的双语例句以及中英文、英汉句子翻译。

Zirconium containing MCM-41 molecular sieves with high surface area, good crystallinity and Si / Zr ratio from 20 -∞ were synthesized in a near neutral condition by using a sodium silicate as silicon source and a zirconyl nitrite as zirconium source.

MCM - 41与传统分子筛比较，最突出的特点是具有 1～ 5nm直径的孔道和 1 0 0 0m2 ·g- 1 左右的比表面，如此宽孔道尺寸的固体材料对于大分子的吸附和催化具有潜在的应用前景[1 - 3] 。

The surface zirconyl species as centers of negative charge compensated by sodium ions presents a property of ion exchange. mesoporous silica ; ZrMCM-41; synthesis ; molecular sieves

在本文中，作者使用中性条件和硝酸氧锆作锆源，在水热体系中把Zr原子引入其固架，合成出了ZrMCM - 41 ，发现该样品与文献 [4]，[5]报道的不同，存在明显的B酸中心。1 实验部分1 。1 试剂硅源：Na2 Si3O7溶

The development and studies of the design and refinement of molecular sieves at home and abord are presented. The background of the thesis is also presented.

介绍了论文课题的研究背景与意义，综述了国内外有关新型分子筛结构设计与优化等方面的研究发展动态。

In this study, we developed the ammonia sensing material by using MCM-41 impregnated with bromocresol green. MCM-41 is one kind of mesoporous molecular sieves. It can be applied to many fields due to well-defined pore shapes, narrow distribution of pore sizes, large pore volumes, high surface area, excellent thermal, hydrothermal, chemical and mechanical stability. And the bromocresol green dye is commonly used as a pH indicator with colorimetric from pH 3.8 to pH 5.4.

本研究之目的是结合变色染剂及中孔洞分子筛MCM-41进行氨气吸附，研究中所选择之变色染剂溴甲酚绿是一种偏酸性之大分子有机染剂，其变色范围在pH 3.8到pH 5.4；而MCM-41由於其孔洞大小分布范围狭窄、孔洞体积大、高比表面积、具有良好的吸附容积、表面反应性强及易於改质等优点，故期望利用此复合材料，经气体吸附达到氨的移除并同时在吸附饱和前能产生显色效果。

As the coach rolls swiftly past the fields and orchards which skirt the road,groups of women and children,piling the fruit in sieves,or gathering the scattered ears of corn,pause for an instant from their labour,and shading the sunburnt face with a still browner hand,gaze upon the passengers with curious eyes,while some stout urchin,too small to work but too mischievous to be left at home,scrambles over the side of the basket in which he has been deposited for security,and kicks and screams with delight.

货车飞快地穿过田野的时候，可以看到路边的果园，一群群妇女和儿童正把水果堆在筛子里，把分散的一穗穗玉米集到一起，劳动会儿又歇歇，用一双更黑的手擦擦被太阳焦灼的脸，用好奇的眼光打量着路人，几个健壮的顽童，太小了不能做事，而又因为太调皮不能留在家里，爬过已经防范好的篮子边缘，兴高采烈地踢着尖叫着。

As the coach rolls swiftly past the fields and orchards which skirt the road, groups of women and children, piling the fruit in sieves, or gathering the scattered ears of corn, pause for an instant from their labour, and shading the sunburnt face with a still browner hand, gaze upon the passengers with curious eyes, while some stout urchin, too small to work but too mischievous to be left at home, scrambles over the side of the basket in which he has been deposited for security, and kicks and screams with delight.

马车摇晃着，轻快地经过路边的田野与果园，一群群的妇女和孩子们，有的正将水果往筛子上堆，有的则在捡散落的玉米穗子，他们稍停了会儿手中的活，用深褐色的手遮在晒黑的脸上，以好奇的眼神望着乘客，一些结实的小顽童，太小还不能上学，但又不能把他们留在家中胡闹，原先被安置在篮子里是出于安全的考虑，这时也爬过了篮边，高兴得又踢又叫。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐