区域经济系统复杂性探析

从区域经济系统整体出发，探讨了区域经济系统复杂性，以及复杂性表现的方面，提出了分析解决区域经济复杂性问题的思路与方法。     

高效能棉纺精梳关键技术及其产业化应用

精梳是纺织产品高档化的重要手段,国家“纺织行业振兴和调整规划”将“扩大精梳纱产品的比重、推广高档精梳纱线”作为纺织工业的战略目标。从2009～2012年,我国精梳纱的比重由24%增加到31%。但随着精梳产品比重的增加,精梳用棉低品级趋势及精梳纱低支化趋势越来越明显,国内外精梳机难以适应精梳原料及精梳纱支的变化。由于棉纺精梳机主要机件运动配合精准性及传动系统的复杂性,国产精梳设备未能在高速高效等关键技术方面取得突破,高端精梳设备的市场一直由国外公司垄断,精梳纱的生产成本高、效益低。     

Influence of Dropping scales of E7/6 Comber on Process Performance

The dropping scales is an important parameter for comber noil and combing quality. Because the rocking of the nipper shaft makes the nippers move backward and forward through a series of links, the original position of nipper frame is altered when changing the dropping scales, the other parameters of combing are changed accordingly. In this paper, the timing of opening-closing on nipper, the timing of cylinder＇s combing, the timing of detachinglapping and variation of nip pressure are calculated and their effects on combing are analyzed in different dropping scales on E7/6 comber.