查询词典 sieve

It is showed that the properties of CMK-3 mesoporous carbon molecular sieve synthesized by hard template method have great influence on Ru dispersion. Higher specific surface area and appropriate pore size distribution is advantageous for sufficient dispersion of Ru on the supports.

采用固相热分解方法成功的合成了介孔氧化铬材料，考察了反应的温度、反应时间、前驱体和表面活性剂配比以及表面活性剂的种类等制备条件对纳米介孔氧化铬材料结构性能的影响。

Then the recombinant plasmid transformed E.coli.JM109. One positive clone was obtained from the libraries with casein flat and ELISA sieve method.

用酪蛋白平板法和酶联免疫吸附的活性筛选方法从基因文库中筛选到一株产海洋低温碱性酶的阳性克隆（命名为pHH1）。

A new generating circuit on five-level M-sequence based on the cut-join sieve method,which can generate 2048 different five-level M-sequence s.

敌我识别系统的核心技术之一是询问信号与应答信号的加密传输，针对信号传输中对密码的要求，文中引入了伪随机码，基于剪接筛法设计了能产生2048个两两相异的5级 M序列的电路，并对该电路进行了仿真，仿真结果验证了该设计的正确有效性

The invention relates to an intergrowth molecular sieve and a synthetic method thereof, which mainly solves the problems of singular apertures, rather weak acidity and low activity of porous materials of the prior art.

本发明涉及一种共生分子筛及其合成方法，主要在于解决现有技术合成的多孔材料孔径单一、酸性较弱、活性不高的问题。

DR is had without achieve, the characteristic with quick, low radiation, safe, tall accuracy, can regard pneumothorax patient as first selection and valuable sieve investigates a method.

DR具有无创、快捷、低辐射、平安、准确性高的特征，可作为气胸患者首选而有价值的筛查方法。

The full text is total to is divided into four chapter:Chapter 1, the relevant concept of the listed company results evaluation, that is the other the theories foundation of the chapter, and do the foul to the textual evaluation angle settle;Chapter 2, the results evaluation index sign and the index sign system, the original index sign system of comprehensive evaluation of information formation that that choice listed company publish, and introduced the in common use index sign to sieve to endow with the method of the power with index sign;Chapter 3, the comprehensive results evaluation method, this is the foundation that carries on chapter 4, that carry on theories in chapter 2 fusion, became two kinds of comprehensive evaluation methods, and carried on the des cription to the operation step of a method;Chapter 4, the substantial evidence is analytical, this is the point of the full text, the collections combines the data of tidy up the listed company, making use of two kinds of methods within chapter 3s respectively, carry on synthesize to rank, and get two kinds of methods to rank the result to look like the consistent conclusion.

全文共分四章：第一章，上市公司绩效评价的有关概念，该章是其它章节的理论基础，并对本文的评价角度做出界定；第二章，绩效评价指标及指标体系，该章选择上市公司披露的信息形成综合评价的原始指标体系，并介绍了常用的指标筛选和指标赋权的方法；第三章，综合绩效评价方法，这是进行第四章的基础，该章将第二章中的理论进行融合，形成了两种综合评价方法，并对每种方法的操作步骤进行了描述；第四章，实证分析，这是全文的重点，收集并整理上市公司的数据资料，分别利用第三章中的两种方法，进行综合排名，并得到两种方法排名结果近似一致的结论。

The invention relates to a three-phase intergrowth molecular sieve and a synthetic method thereof, which mainly solves the problems of singular aperture, rather weak acidity and low activity of the porous material synthesized by the prior art.

本发明涉及一种三相共生分子筛及其合成方法，主要解决现有技术合成的多孔材料孔径单一、酸性较弱、活性不高的问题。

The polyurethane sieve plate used in coal mines is one of these products.

矿用聚氨酯筛板就是其中之一。

This article introduced the new type wear resisting and blockless sieve plate from the construction and material .

本文从筛板结构及材质两方面介绍了所开发的新型防堵耐磨筛板，其结构为高碳低合金铸造筛条和低碳结构钢框架焊接结构。

Modeling for resistant coefficient of the sieve plate column was presented.

给出matlab用于求解板式塔阻力系数的计算方法。

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