查询词典 sieve method

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。

After improvement method of sieving. It can proceed the sieving to the single species pesticide liquid, and also fit to multi-specieses pesticide liquid or unknown pesticide liquid, the ratio of volume does not completely together whole 10. Compare with the former, the later has some advantages like easy to operate, economic, easy to control in operating temperature (30℃), breadth application and sieve speed quick (10 min/each), etc. It is very suitable for pesticide factory to produce emulsifiable solution.

改进后的筛选方法，二者的体积比则不凑整10，既可对单品种农药液进行筛选，也可对多品种农药液或未知农药液进行筛选，与前者相比，后者具有操作方法简便、经济、操作温度易控制(30℃)、应用范围宽、筛选速度快（10min/个）等优点，非常适合农药厂家在生产乳油时应用。

Enichem which use the catalysts of improving gmolecular sieve and metal oxide and heteropoly compounds will be most popular method.

其中改进了Enichem法的分子筛和金属氧化物以及杂多化合物为催化剂的方法逐渐占据了主流。

In the preparation method, the raw materials of houghite compound, the alumina, the silica and the molecular sieve are mixed uniformly; then an obtained mixture is molded; the compound is dried and calcined.

其制备方法为：将原料水滑石类化合物、氧化铝、氧化硅、分子筛混合均匀；然后将所得混合物进行成型；将上述化合物进行干燥焙烧。

Hybrid mesoporous molecular sieve materials with hexagonal mesoporous structure and covalent bonded polyoxometalates were synthesized based on tetraethoxysilane anti lacunary polyoxometalate, SiW11, via sol-gel method in the presence of triblock copolymers P123 as the structure-directing agent. The influences of molar ratio of inorganic precursors and aging temperature on the structure and the loadings of SiW11 in the hybrid materials were investigated. Some reaction details in the synthesis were revealed.

用嵌段共聚物P123为模板剂，正硅酸乙酯和缺位结构的多金属氧酸盐SiW11为无机前驱体，由溶胶－凝胶法合成了具有六方结构和SiW11共价键联的介孔分子筛杂化材料SiW11/SBA-15，着重考察了无机前驱的配比和老化温度对杂化材料结构及SiW11负载量的影响。

Secondly, the silver based catalysts modified by phosphorus, zirconium, zinc, potassium and so on using molecular sieve as carrier, which were produced by ion-exchange method, had also good catalytic performance for 1,2-propane glycol oxidation to methylglyoxal. The conversion of 1,2-propane glycol and the selectivity of methylglyoxal were both high, and the impurity such as formaldehyde and acetaldehyde in the product is little. At the condition of the temperature 300 ℃, the molar ratio of oxygen to 1,2-propane glycol 1.7:1, the space velocity 6000h~(-1), and the concentration of 1,2-propane glycol 70wt%, the conversion of 1,2-propane glycol is 90% and the selectivity of methylglyoxal is 45% on the Ag-P catalyst.

其次对采用离子交换法制备的负载在分子筛上的银系催化剂进行了研究，发现此催化剂在助催化剂磷、锆、锌、钾等的作用下对丙二醇的低温氧化脱氢具有很高的活性，可以得到较好的丙酮醛的收率，并且产物中的甲醛、乙醛副产物的量比较低；经过对Ag-P催化剂上反应条件的考察，发现当温度为300℃、氧醇比1.7：1、空速6000h~(-1)、丙二醇浓度为70wt%时，丙二醇的转化率为90%，丙酮醛的选择性为45%。

Experimental materials include CO2 incubator,M199, fetal calf serum,Ⅳ collagenase, 40 g/L of paraform, 20 g/L of cidex,ECGF, mouse-anti-human FⅧ monoclonal antibody(anti-FⅧ-RAg), multi-marked immune analyser(1 420, WALLAC BLCTOR2), centrifuge, inverted microscope, and immunofluorescence microscope, etc.METHODS: Three-step gradient sieve method was used.

实验材料为CO2培养箱，M199，胎牛血清，Ⅳ型胶原酶，40 g/L多聚甲醛，20 g/L戊二醛，ECGF，鼠抗人第八因子单克隆抗体，多标记免疫分析系统(1 420，WALLAC BLCTOR2)，离心机，倒置显微镜，免疫荧光显微镜等。

The method comprises heating up the lactic acid solution to gasify at 150-200 degree C, mixing the obtained mixed vapour of lactic acid and water with the carrier gas, entering into gas-solid catalytic reactor to get the reaction product gas by the action of a modified Y zeolite molecular sieve catalytic agent and dewatering after heating up the mixed gas to 200-450 degree C, obtaining the propenoic acid solution through gas-liquid dissociation after cooling the reaction product gas, obtaining coarse propenoic acid products form the propenoic acid solution by gas stripping, azeotropic distillation, extraction and rectification in turns.

其特征在于将乳酸水溶液加热至150～200℃气化得到的乳酸-水混合蒸气与载气混合，将混合后的气体继续加热到200～450℃后进入气-固相催化反应器中经改性Y沸石分子筛催化剂作用脱水得反应产物气体，反应产物气体冷却后经气液分离得到丙烯酸溶液，丙烯酸溶液再依次经过气提、共沸蒸馏或萃取、精馏得到粗丙烯酸产品。

Who? I never heard of him, Paul said, before asking teammate James Posey if he had heard of him.

赛后，科比说，他一直都是一名非常出色的射手，今天他打得很棒。

When I joined the company, I rotated around the different sections.

我加入这个公司时，轮换过几个不同的部门。