共查询到20条相似文献,搜索用时 78 毫秒
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该文设计了一种新型环保木粉机,采用循环式切削粉碎多级分层加工与气流筛选相结合的超细木粉粉碎工艺。,在超细木粉的粉碎过程中,将分级筛选设备与粉碎设备连为一体,不断将已经达到目的超细木粉滤出,未达到要求的进行冷却再返回粉碎室进行多次循环加工,如此不但减轻了微细颗粒在粉碎中的团聚与干扰,提高了能量的利用率,同时也保产品的细度和粒度分布的均匀性,超细木粉质量的一致性,提高了加工效率大大降低了能耗,使得加工过程更加环保、高效、 相似文献
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提出了旋筛式碾米机碾辊动平衡故障灰色关联分析诊断模型。针对A型灰色关联分析模型和B型灰色关联分析模型存在的问题,采用灰色混合关联度模式,以加权的方法将二者有机结合起来。选择碾辊振动信号中恰当的时域和频域参数为故障特征参数,通过比较检测状态模式与标准故障模式的关联度判别碾辊动不平衡故障,诊断方法简单方便,结果准确可靠。 相似文献
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In the th century the industrial civilization has grown by leap bounds with fuels like coal petroleum and natural gas as its power.Human beings however are plagued with two big problems-energy exhaustion environmental pollution-when enjoying the excellent material life thanks to the modern civilization.They are gradually developing adopting new energy with the hopes of solving the two problems achieve a sustainable economic growth.…… 《中国对外贸易(英文版)》2007,(18):52
In the 20th century,the industrial civilization has grown by leap and bounds with fuels like coal,petroleum,and natural gas as its power.Human beings,however,are plagued with two big problems-energy exhaustion and environmental pollution-when enjoying the excellent material life thanks to the modern civilization.They are gradually developing and adopting new energy with the hopes of solving the two problems and achieve a sustainable economic growth. 相似文献
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在新冠肺炎疫情防控常态化、“双循环”新发展格局加快形成的态势下,亟待发挥新消费引领作用,形成新供给新动力。消费是经济循环的终点,也是新的起点,发展壮大新型消费,以消费升级推进智慧流通新模式、新业态,以现代流通创新激发新的消费增长点,不断释放消费增长潜力,具有推进经济高效循环的作用。新消费既是消费的新引擎、新动力,也是国民经济循环的重要引领力量。疫情影响下,数字化零售、在线服务、直播电商等线上消费快速发展,我国消费市场及业态、模式面临新的变化。消费呈现出从功能型消费向享受型消费转变、从商品消费向非商品消费转变的趋势,消费者更追求优质消费体验、愿意为美好生活埋单。线下商业逻辑从坪效导向、品牌导向日益向消费者体验导向转化,线上商业进入数字化消费的3.0阶段,产业互联网蓬勃兴起,通过跨界与融合,新零售体系不断创新。我们应主动把握消费升级趋势和发展规律,构建“新消费、新业态、新模式”的消费新生态体系,形成强大的国内市场,推进“双循环”新发展格局加快形成。 相似文献
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《Journal of Global Marketing》2013,26(1-2):73-97
Abstract During the last fifteen years there has been a substantial restructuring of retailing in Europe. The implications of this reach beyond Europe. The restructuring involves not only competitive relationships amongst retailers but also involves new forms of relationships with suppliers. A new perspective of the role of retailing is emerging that places retailing in a global framework of international store operations, international sourcing of products, international flows of management and managerial know-how, and international awareness by consumers of the retailers who are becoming international brands. The aim of this paper is to place the restructuring in context, to consider the nature of it and to explore how the new global framework will begin to have effects for distribution industries in Asia. 相似文献
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