A press conference was held in Beijing on August 23,marking the launch of a public competitive campaign to obtain a name and logo for China’s Mars mission.The project and its progress were introduced at the conferenc...A press conference was held in Beijing on August 23,marking the launch of a public competitive campaign to obtain a name and logo for China’s Mars mission.The project and its progress were introduced at the conference and the external appearance of the Mars probe and the rover was revealed.China’s Mars mission will be implemented in two steps.The objective of the first step is to achieve orbiting,landing,and roving.Mars sampling will be the purpose of the second step。展开更多
Generally, ring spun yarns are manufactured from roving which is produced by roving frame. In this paper, an experiment has been done producing ring spun cotton yarn directly from finisher drawn sliver eliminatin...Generally, ring spun yarns are manufactured from roving which is produced by roving frame. In this paper, an experiment has been done producing ring spun cotton yarn directly from finisher drawn sliver eliminating the roving frame. Total 3 types of yarn with the various linear density of 8 Ne, 10 Ne & 12 Ne were produced using a roving frame and without using a roving frame. In the next step, physical and mechanical properties of those yarns including unevenness, imperfections, hairiness & tenacity were investigated. The result showed that ring spun cotton yarns produced from sliver exhibited inferior physical and mechanical properties compared with samples from the conventional ring spinning system.展开更多
文摘在经济全球化的今天,资本势必向着低成本国家和地区流动。作为汽车制造成本中重要的一个环节,零部件采购也遵循着成本最低化的原则。在全球各大汽车整车和零部件厂商纷纷把亚太采购中心移师中国的时候,NG Rover也不失时机地把亚太采购中心设到了上海。在中国汽车零部件采购贸易洽谈会召开的前夕,本刊对MG Rover国际资源采购亚太区经理杨诗杰(Gemma Stuart Young)女士进行了专访。
文摘A press conference was held in Beijing on August 23,marking the launch of a public competitive campaign to obtain a name and logo for China’s Mars mission.The project and its progress were introduced at the conference and the external appearance of the Mars probe and the rover was revealed.China’s Mars mission will be implemented in two steps.The objective of the first step is to achieve orbiting,landing,and roving.Mars sampling will be the purpose of the second step。
文摘Generally, ring spun yarns are manufactured from roving which is produced by roving frame. In this paper, an experiment has been done producing ring spun cotton yarn directly from finisher drawn sliver eliminating the roving frame. Total 3 types of yarn with the various linear density of 8 Ne, 10 Ne & 12 Ne were produced using a roving frame and without using a roving frame. In the next step, physical and mechanical properties of those yarns including unevenness, imperfections, hairiness & tenacity were investigated. The result showed that ring spun cotton yarns produced from sliver exhibited inferior physical and mechanical properties compared with samples from the conventional ring spinning system.
