Hopper相关论文
We study experimentally the jamming phenomenon of granular flow of bidisperse disks in a 2D hopper driven by gravity.Whe......
Two approaches are widely used to describe particle systems: the continuum approach at macroscopic scale and the discret......
本单元我们学习了butterfly、dragonfly、firefly、grasshopper这几个单词,很多同学读起来、记起来都非常的吃力,而小明却掌握得很......
Owing to a certain angle existing between a belt conveyor and the parallel hoppers,and the hoppers localizing away from ......
This paper analyses three popular methods simulating granular flow at different time and length scales: discrete element......
Rice brown planthopper (BPH) (Nilaparvata lugens Stal, ) which occurs 4 generations within one year in Jiangsu Province......
Rice brown planthopper(BPH)(Nilaparvatalugens Stal,)which occurs 4 generations with-in one year in Jiangsu Province has......
Field experiments were carried out in northern Zhe-jiang Province.Three insecticides(methamidophos,Shachongshuang and t......
The Predatory Function of Three Spiders to Two Insect Pests in Rice Within a Multi-species Co-existe
The prey-seeking behavior of three spiders (X1-Pirata subpiraticus, X2-Clubiona japonicola and X3-Tetragnatha japonica)......
The incipient condition of hang-up for three Geldart-D powders has been experimentally studied in a 21 m long standpipe ......
本文比较研究了10种水稻害虫在3个树种(Akashmoni,Jhau和Albida)与稻子混栽的农-林复合生态系统中的发生情况,通过3个树种的冠幅大......
This paper presents a numerical and experimental study of the discharge rate of sawdust from an aerated hopper as an imp......
Flow and physical properties were measured for three fuel powders:sawdust,brown coal and hard coal.Besides physical prop......
Intel最初选择用RDRAM支持Pentium 4来充分发挥其超乎寻常的品质。但其昂贵的价格让很多人望而生畏。于是忍痛割爱从RDRAM转到DDR ......
Flow behaviors of four kinds of granular particles(i.e. sphere,ellipsoid,hexahedron and binary mixture of sphere and hex......
亲爱的同学们,你们在英语学习中,一定会遇到一些比较难记住的单词,它们之所以让我们记忆困难,多数是因为它们太长了!比如grasshopp......
According to measuring mode (in-hopper,surface,transmitted and scattered neutron moisture gauge),this paper introduced t......
[Objective] Study on the effects of rice-duck mutualism on weeds and insects pests and economic benefits of paddy field.......
Tagging of Brown Planthopper Resistance Genes in F_2s of IR50 × Ptb33 of Rice by Using Bulked Segreg
Brown planthopper(Nilaparvata lugens St?l) is one of the most damaging pests causing hopper burn in rice,and thereby red......
该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......
This paper presents a numerical and experimental study of the discharge rate of sawdust from an aerated hopper as an imp......
以采用低低温除尘技术实现超低排放的工艺路线为指引,提出了适合低低温除尘器灰斗加热的设计方案,引出了灰斗蒸汽加热系统的设计概......
Modern cars are mostly computerized and equipped with passive keyless entry and start(PKES)system.PKES is based on Radio......
本文叙述了求斗式提升机料斗相位角的作图方法;确定料斗滑动相位角、初始卸料角和理论卸空角的作图方法。......
小型复式谷物清选机的研制是在市场有大量需求的前提下进行的。该机配用动力是1．5kW的单相交流电动机，机架的宽度尺寸是根据地排车下......
本文介绍了实物校验装置在火电厂中的应用必要性,具体介绍其工作原理、系统结构和性能以及安装调试主要事项。......
为将A系列棉卷工艺改造为清梳联工艺，通过查阅有关资料，分析研究A系列开清棉流程和清梳联流程各单机的性能，确定了用A系列开清棉机与F......
探讨传统清梳流程的清梳联改造方法。介绍了清梳联的优势及关键改造技术，如连续喂棉系统、气压式棉箱、自调匀整装置等。列举了清梳......
本文针对锦纶纯纺纱易产生静电从而影响成条的技术难题，提出一种具有可加湿防静电功能的棉箱改造方案，在现有FA203C型梳棉机棉箱基础......
为了解决六棱形油画棒自动包装机的落料问题,研究了六棱形油画棒的物料特性和落料要求,借鉴现有文具包装机器的相关结构,初步设计......
随着铝电解生产技术的日趋成熟，电解槽氟化盐添加方式经历了从加料小车添加到超浓相输送以及目前更加精确配料的电解槽上部氟化盐精......
料斗是输送系统中的常用组成部分,其形式多种多样。在钢铁、固体火箭发动机生产等行业企业的生产过程中,在某些特定的生产环节,物......
由于实际设备与工况的差异，火电厂除尘系统的输灰系统实际运行差异大，根据实际的设备状况与运行要求，设计合理的输灰程控逻辑，有利于提......
介绍了一种石灰石粉仓料斗侧壁展开计算方法。该方法利用空间解析几何与微积分学得到了解析计算公式。设计人员依据此计算公式可直......
分析橡胶膨胀干燥机设备故障原因,并提出相应对策。通过采取筒体内均匀分布沟槽、进料段螺套螺距与直径比由0.64增大到0.96、螺杆......
We experimentally investigate the effect of the hopper angle on the flow rate of grains discharged from a twodimensional......
针对常见开闭器式量杯充填装置结构较复杂、易漏料撒料且包装成品合格率偏低的问题，给出了一种磨盘式量杯充填装置的设计方法。以常......
主要通过实际工作经验,系统阐述ABG423型摊铺机故障成因及排除方法。...
为了研究粉体物料料斗内颗粒流动的内在机理，应用颗粒离散单元法建立仿真模型．利用颗粒流程序三维版模拟物料料斗卸料过程中粉体物料......
为克服现有软袋包装设备中软袋下袋机构所存在的缺陷,提高软袋包装产品装盒的效率,在软袋输送带总成下袋口位置上方设置计数器,通......
针对目前散装物料输送系统存在的特点,提出了几种转接设备的结构设计形式,从设备具体方案和技术特点方面对如何减轻物料对转接设备......
文章通过研究不同栽培方式下灰飞虱发生数量及其与水稻条纹叶枯病的发生关系、不同水稻品种间条纹叶枯病田间自然消长规律。结果表......
70t级铁矿石漏斗车是为增加车辆载重、提高铁路货物运输能力而开发研制的新型重载漏斗车。该车结构继承K14K型车的优点，在车体、风......
通过测量散体颗粒在负压差移动床立管料斗中静态拱宽度及分析散体性质，料斗形状和操作条件对料斗静态拱宽度的影响，得出当散体颗粒６４３．５ｋｇ／ｍ＾３≤......
当散体颗粒在负压差移动床立管下端连接的锥形料斗中流落时，对料斗上方和气室中大无畏动分别加以采集，经过快速建立傅立叶变换处理，得......
