查询词典 sieve method

Absorption with molecular sieve as the traditional method of dehydration ofpropylene has many disadvantages such as complex equipment, high energyconsumption, pollution environment.

传统的丙烯脱水技术是分子筛吸附法，存在着设备复杂、能耗高、污染环境等弊病。

Absorption with molecular sieve as the traditional method of dehydration of propylene has many disadvantages such as complex equipment, high energy consumption, pollution environment.

传统的丙烯脱水技术是分子筛吸附法，存在着设备复杂、能耗高、污染环境等弊病。

ObjectiveTo sieve the best purification method of Herba Leonuri's acidic alcohol- extract by comparing the purification efficiency of different methods.

目的通过对不同精制方法的比较，筛选出益母草酸醇提取液的最佳精制方法。

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。

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 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。

A method for eliminating the internal oxide structure in the gas-phase carbon-nitrogen osmosis of gear features that the CCL4 is added to the kensene as carburizer and then is decomposed to generate Cl2 for reducing the oxide, the ammonia gas as nitrizing agen passes through the cylinder of silica gel or granular calcium chloride for adsorbing residual water vapour and then through the cylinder of 5A molecular sieve for adsorbing residual O2, and the resistance wire is wound on igniting pipe at furnace top to prevent the NH4Cl in exhausted gas from being condensed.

本方法采用在气体渗碳剂煤油中，加入6～8％的CCl 4 ，使共渗炉内的CCl 4 分解出新生的Cl 2 ，使已形成的合金元素内氧化物还原；在渗碳剂氨气入共渗炉前，先经过硅胶瓶或桶及粒状氯化钙瓶或桶过滤，吸附掉氨气中的残留水蒸汽，再经过5A分子筛瓶或桶吸附掉氨气中的残留氧；在靠近炉顶位置的点火管周围缠绕带瓷环的电阻丝，靠电阻丝的副带加热，使排气中的NH 4 Cl不冷凝结块等措施实现内氧化组织的消除。

This machine is the patent product of our country, which use machinery method to form its screen by special screen piece juxtaposed on the rotor and rotor rotates at the same direction speed, so the coal on the screen can circumrotate resort to peach type screen and move forward with fluctuate form so as to come to the purpose of high efficient sieve classification.

本机为国家专利产品，是利用机械方法，通过多排并列在转子上的特制筛片构成多变的筛孔组成其筛面，转子以同向等速做周向旋转，并以波动形式向前运动，从而达到高效筛分目的。

Key words : grain size analysis ; laser diffract instrument ; sieve-pipette method ; model sediment

对不同的粒级组分进行了激光法和筛析-沉降法的回归分析，粗颗粒物质相关性好，可以进行数据间的转换。

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