查询词典 sieve

The replacement of woven screen, they should ensure that both sides of the plate and mesh sieve box hook equal to the gap between the first fastening the middle pressed flat, while taut tensioning plate to maintain uniform mesh surface tension, and hand - hammer gently tap along the length, check the tension the situation.

12更换编织筛网时，应保证筛箱两侧板与筛网钩子之间有相等的间隙，先紧固中间压紧扁钢，同时拉紧张紧板保持筛网表面张力均匀，并用手锤沿全长轻轻敲打，检查张紧情况。

Using image processing technology, we analyze the size and shape of cell wall crystal region of bamboo's cross section during entire growth from bamboo shoot to the mature bamboo. Using region segmentation, we study the forming and distributing characteristic of crystal regions of the fiber cap、 proto-sieve 、 thin-walled cell of vascular bundle of bamboo's cross section.

本文应用图像处理技术分析了竹材从竹笋到成竹整个生长阶段横截面细胞壁结晶区的大小及形态，并应用区域分割法研究了竹材微管束横截面中的纤维帽、筛管、薄壁细胞等各部分结晶区的形成过程以及分布特征。

Leading products are: ZSG series efficient heavy screen, GQMS high rate of powerful special screening of coal, such as thick oval Shaker, YA type YK-round vibration sieve, SZR series of thermal mineral shaker, MZS series of pulverized coal shaker, ZWS vibration Network Screen, K-type reciprocating to the coal machine, ZFB series of anti-blocking, DKS granular urea screening machines, ZG series motor vibrating feeder, GZD electromagnetic vibrating feeder, the feeder disk, LS, GX-screw conveyor, PL, D-type bucket elevator, DJ, JB-steep, vertical belt with corrugated wall machines, mobile ZP-belt conveyor, Gechongfeibiao structural design and fabrication.

主导产品有：ZSG系列高效重型筛、GQMS高幅强力煤炭专用筛、椭圆等厚振动筛、YA型、YK型圆振筛、SZR系列热矿振动筛、MZS系列煤粉振动筛、ZWS振网筛、K型往复给煤机、ZFB系列防闭塞、DKS大颗粒尿素筛分机、ZG系列电机振动给料机、GZD电磁振动给料机、圆盘给料机、LS、GX型螺旋输送机、PL、D型斗式提升机、DJ、JB型大倾角、垂直波状挡边皮带机、ZP型移动式胶带输送机、各种非标结构件的设计及制造。业务覆盖全国各地，远销国外。

Leading products are: ZSG series efficient heavy screen, GQMS high rate of powerful special screening of coal, such as thick oval Shaker, YA type YK-round vibration sieve, SZR series of thermal mineral shaker, MZS series of pulverized coal shaker, ZWS vibration Network Screen, K-type reciprocating to the coal machine, ZFB series of anti-blocking, DKS granular urea screening machines, ZG series motor vibrating feeder, GZD electromagnetic vibrating feeder, the feeder disk, LS, GX-screw conveyor, PL, D-type bucket elevator, DJ, JB-steep, vertical belt with corrugated wall machines, mobile ZP-belt conveyor, Gechongfeibiao structural design and fabrication.

主导产品有：ZSG系列高效重型筛、GQMS高幅强力煤炭专用筛、椭圆等厚振动筛、YA型、YK型圆振筛、SZR系列热矿振动筛、MZS系列煤粉振动筛、ZWS振网筛、K型往复给煤机、ZFB系列防闭塞、DKS大颗粒尿素筛分机、ZG系列电机振动给料机、GZD电磁振动给料机、圆盘给料机、LS、GX型螺旋输送机、PL、D型斗式提升机、DJ、JB型大倾角、垂直波状挡边皮带机、ZP型移动式胶带输送机、各种非标结构件的设计及制造。

By the use of a weighting method the ash formation distribution of coal with a wide sieve fraction can be obtained.

通常情况下，可以通过机械振筛的方法得到煤灰的粒径分布，清华大学采用 85 0℃的温度下将约 2kg的某窄筛分煤样在马福炉内静态燃烧，然后将收集的灰样在振筛机中用 2 。0mm振幅冷态振筛 5 0min的方法来研究了几种煤种的成灰特性，得到煤灰的初始粒径分布

On the basis of analyzing the chemical composition and mineralogical composition of coal fly ash,a new technological process for producing 4A molecular sieve from coal fly ash has been developed.

在分析粉煤灰的矿物组成和化学成分的基础上，设计了粉煤灰制备4A分子筛预处理过程的工艺流程，并根据流程重点介绍了粉煤灰的粉末细度、焙烧、酸溶活化和除杂等方面的参数选择情况，制备出符合要求的预处理样品，为进一步合成4A分子筛创造了条件。

Coal kaolinite ; 4A molecular sieve ; hydrothermal synthesis ; static water absorption

煤系高岭土； 4A分子筛；水热合成；静态水吸附率

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公司专业生产选矿设备，提供工艺流程，选矿实验，安装指导www.lzkysb.cn温良禹0797-5745599锯齿波跳汰机，隔膜跳汰机，旁动式跳汰机，侧动式跳汰机，下动式跳汰机，双室隔膜跳汰机，选矿跳汰机，动筛跳汰机，锯齿波大颗粒跳汰机，JT跳汰机，公司生产的跳汰机，单斗跳汰机，隔膜跳汰机，双斗跳汰机，锯齿波矩形跳汰机，锯齿波梯形跳汰机，左式和右式跳汰机有JT，LTS等各种系列，该机是固定筛子式，适用于选别金属矿石，如钨，含金的砂矿，精选锡矿等，也可用于选细粒物料和粗粒物料，最大给矿粒度为30毫米。

Five vanadium catalysts were made with γ-Al2O3 and the mesoporous molecular sieve MCM-41 as carrier, and were made by dipping method, intermingle process and functionalizing method respectively.

结果表明，采用以V2O5为活性组分，介孔分子筛为载体，浸渍法制备的钒催化剂，反应时DPC收率及DPC选择性是最高的，催化反应的效果最好。

And precipitation rate of vanadium was higher than 98.5%. Five vanadium catalysts were made withγ-Al_2O_3 and the mesoporous molecular sieve MCM-41 as carrier, and were made by dipping method, intermingle process and functionalizing method respectively. The characterization of their pore size, crystal structure, specific surface area and V_2O_5 load of catalysts were studied by XRD, the adsorption /desorption of N_2 technique, Raman spectroscopy and XRF. The activities of the catalysts estimated by the synthesis of DPC with DMC and phenol.

钒催化剂的制备与表征及活性评价：是分别以γ-Al_2O_3和介孔分子筛为载体，采用浸渍法，掺杂法及官能化法制备了5种钒催化剂；分别对其进行了XRD分析、N_2吸附-脱附分析、红外光谱分析和荧光分析，对其孔径、晶型结构、比表面积和V_2O_5负载量进行了表征；以碳酸二甲酯和苯酚的酯交换合成碳酸二苯酯的典型反应为依据，对钒催化剂进行了活性评价。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。