Although a great progress has been achieved for the development of NF membranes and technologies and SRNF do show a great potential in the separation of organic
M1450磨床用二加工中小轧辊,由于故障致使工作台纵向移动活塞杆弯曲.该活塞杆分左右两件,直径50mm,长3500mm空心管状在全长三分之一部位产生一个45°左右的死弯,外侧受拉
针对现代数控机床高速、高精发展趋势,分析了机床进给系统应用直线电动机的优缺点.阐述了不同结构类型直线电动机的特点及其相应的应用场合.总结了直线电动机直接驱动伺服系
The use of coconut shell particulates to enhance the insulating refractory properties of Ukpor, Osiele and Kankara fireclays in Nigeria was studied in this pape
Localized residual strain develops within the metallurgical texture of 1018 carbon steel from metallurgical processes, such as fabrication, annealing, and shapi
文章对基于PC的开放式测控系统进行了简单论述.对于伺服控制环节,给出了由专用集成电路组成的简单可靠的硬件电路来驱动直流伺服电动机构成闭环位置控制系统.并提出了脉宽调
The present work reports the effect of carbonate addition to iron rich kaolinite on the phase transformation during firing. Mineralogical, thermal (including DT
电火花线切割加工模具或齿轮渐开线齿廓之前,需先作曲线拟合,以便计算线切割编程数据.文章给出高精度的渐开线齿廓线曲线二点拟合法以及电火花线切割加工模具齿形和内齿精度
据《国际钨工业协会新闻》1993年6月报导,美国难熔金属协会宣布,决定暂时搁置向美国政府申请有关抑制迅速增长的中国钨制品涌向美国市场的有序市场协议。协会作出这一决定的
Iron ore tailings filled polypropylene (PP) composites were produced using the compo-indirect squeeze casting (C-ISC) process. Particle sizes 150, 212 and 300