共搜索到17494条信息,每页显示10条信息,共1750页。用时:0小时0分0秒438毫秒
Bond粉磨功指数研究与应用的进展(续一)吴建明北京矿冶研究总院 北京100044摘 要:介绍Bond功指数的产生,发展,应用和进一步研究中的一些主要工作,包括对Bond功指数概念中各个参数之间的关系之研究,Bond功指数与其他物理机械参数的关系研究,特殊测定方法的研究,简化测定方法的研究和计算机模拟方法的研究等.指出了各种测定Bond粉磨功指数的简化方法和模拟方法的优缺点,提出了其适用范围.关键词:Bond功指数;球磨;棒磨;操作功指数;测定;模拟;......
; Degradation of bond between steel bar and freeze...; Abstract: The effect of electrochemical chloride extraction (ECE) on bond strength between steel bar and freeze-thaw concrete contaminated......
......
:TG 239.7 文献标识码:A First principles calculation on Mg2Ni alloy and its hydride electronic structure and bond characteristics MA Shu-yuan, HUANG Dan, ZHENG Ding-shan, XIAO... transformation, the strength of ionic interaction between Mg and NiH4 is weakened, which is a reason why the stability of alloy hydride decreases. Key words: Mg2Ni; Mg2NiH4; electronic structures; bond......
based on the bond energy and thearea density of dangling bonds which depends on the structure of the surface. Theresults provide a general expression for the SFE in terms of the bond energy (E... of Materials Science and Engineering, Central South University, Changsha 410083, China) Abstract:The surface free energy (SFE) of (1× 1)-surfaces of crystals, without reconstructionand adsorption......
......
(93.38~133.41°),Si-O-Si键角平均在144°左右并且具有更大的分布范围(127~180°). 关键词:低硅沸石; 晶格能极小化; 晶格能; 键长和键角; 结构和性能; Key words low-silica zeolite; lattice energy minimization; bond length and bond angle; structrue and property......
......
with mass in the inner cavity was proposed. The lumped parameter method was used to establish the bond graph model of impact model, which introduced the concept of switched power junctions (SPJ... a lower crest and a longer effective impact time as it has more than one force wave, which also protects the pile body and improves the efficiency of energy transfer. The filling mass and the hammer......
valve and the mechanism of the magnetic fluids filled into the working gaps of a torque motor, the bond graph method was introduced to describe the energy input, transfer, translation and dissipation... and reducing the working area of magnetizer can improve the system’s stability, but reduce the flow gain of the system. Key words: magnetic fluids; twin flapper-nozzle servo valve; bond graph; simulation 双喷嘴挡板伺......