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1.
编者按:随着北京奥运会主场馆鸟巢建筑、中央电视台新址斜楼、世界第一高的广州电视塔、武汉天新洲长江大桥等一大批外形壮观、结构精美钢结构工程的拔地而起,标志着我国钢结构进入快速发展的新时期.  相似文献   

2.
在Word中处理AutoCAD图形   总被引:5,自引:0,他引:5  
将AutoCAD和Word两个软件通过“剪贴”“复制”“粘贴”等方法,实现AutoCAD绘制的图形插入Word中,并充分利用向导和模板功能等图形处理技巧,使工程图样“图文一体化”。  相似文献   

3.
阿尔法系列加工中心以无可辩驳的事实证明了其创新理念,经过严峻的连续运行的考验了.位于德国Augsburg的Hosokawa Alpine,是一家机械加工工程与吹制薄膜加工专用机械制造商于2001年定购了D(o)rries Scharmann Technologie(DST)公司刚刚"脱离绘图板"的阿尔法机床.  相似文献   

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2007年10月16日,在第九届BICES开幕之际,江苏沃得集团正式对外宣布并购江苏常松工程机械、汽车配件两大单元,并重组江西宜工集团工程机械资产。"此次战略重组的主要目的之一就是通过借助宜工和常松的原有资源进入工程机械行业,从而为沃得创造新的产业链。"沃得工程机械有限公司总经理汪步勤告诉记者。  相似文献   

6.
由中国机械工程学会和山东省人民政府主办、山东省科协、山东机械工程学会、山东省机械设计研究院共同承办的"中国创新论坛"之"走进山东"系列活动今天在这里正式拉开帷幕。  相似文献   

7.
用于毫米波的新型波导装置已研制成功。该波导为介质波导,内衬两组通路孔作为导体,本文中的这种装置被称为“叠片波导“。这种叠片波导能应用于天线馈线。  相似文献   

8.
Aliquots of lymphocyte cell suspensions were pretreated according to the following three schedules before freeze fracturing: (a) prefixed with 2% glutaraldehyde before infiltration with 25% glycerol in medium RPMI-1640; (b) frozen in medium RPMI-1640 without additional pretreatment; and (c) frozen after pretreatment with 25% glycerol in medium RPMI-1640. The diameters of the fractured nuclear pore complexes of cells prefixed with glutaraldehyde were normally distributed within the range 70-120 nm (median 90 nm). The nuclear envelopes of 66-75% of cells processed through schedules b and c, which omitted glutaraldehyde fixation, had 70-120 nm diameter pores, while the remainder had pores with diameters in the range 120-175 nm. The large pores were structurally similar to the smaller pores except for their dimensions. These results indicate that glutaraldehyde gives rise to shrinkage of the larger pores to the minimum, smaller, diameter. Apparent orifices of at least 30 nm diameter were sometimes observed at the centres of these large pore complexes. We propose that the variation in pore diameters may indicate opening and closure of this orifice, and that the widely reported "central granule" of the nuclear pore complex corresponds with the orifice in a closed configuration.  相似文献   

9.
联轴器找正是设备安装和修理过程中一项很重要的装配工作。本文从联轴器找正时偏移情况的分析,联轴器找正时的计算和对实际运用要领等三方面详细阐述了此项工作的要点和实际生产的重要性。  相似文献   

10.
Outsourcing has been growing in popularity over the last few years. It provides excellent marketing opportunities for service providers and has opened new business sectors such as third party logistics providers and electronic third party manufacturers. If done well, it is an excellent way to gain focus on critical business processes and optimizes how business managers use their effort. To do the job properly, the authors have provided the necessary guidelines in establishing an outsourcing partnership. The steps are given as: 1) understanding the business strategy and vision, 2) candidate selection outsourcing, 3) specification and development, 4) feasibility study, 5) development of the business case, 6) tendering process and partnership selection, 7) contracts and negotiation, 8) implementation, and 9) supplier management. Application of these outsourcing strategies can lead to cost reduction and business simplification.  相似文献   

11.
《模具制图》是模具专业重要的专业基础课之一,该课程学习质量的好坏将对后续专业课程的学习、生产实习产生很大的影响。因此在教学中,采用项目教材,改革教学方法,把案例教学、角色扮演、多媒体技术和传统教学手段、理论和实践教学有机结合起来,取得模具制图教学的良好效果。  相似文献   

12.
简要介绍了制图课程应注重细节设计的重要性,重点叙述了制图教学应从教学方法的设计、板书设计、绘图工具、作业辅导4个方面中进行细节设计。  相似文献   

13.
根据临汾市多年小麦生产经验,总结归纳了小麦生产中6项基础措施,为保证小麦高产稳产提供依据.  相似文献   

14.
本文从“十四五”规划《建议》在经济社会发展和改革开放的重点任务,即科技创新、产业发展、国内市场等重点领域出发,探索仪表自动化企业发展的未来之路。  相似文献   

15.
《汽车零部件》2013,7(1):17-17
正一汽解放汽车有限公司车桥分公司(如下简称一汽车桥),前身为第一汽车制造厂底盘厂,始建于1953年7月15日。50多年来,经过三次创业、资源整合,于2003年3月28日组建公司,自此走上了自主发展、规模化经营之路。一汽车桥经过"双加工程"、"三期国债项目"及"七期国债项目"的十年发展改造,拥有南、北两个厂区,总占地面积  相似文献   

16.
通过论述新农村建设涉及到农村的各个方面,阐述了在新农村建设过程中,要科学规划、合理布局、审慎大拆,全面建设好新农村.  相似文献   

17.
产品质量监督检验制度的实施,对提高企业产品质量,增强质量意识起着一定的积极作用。在质量监督检验制度中,质检报告是对整个抽检过程的集中体现,它的作用有以下三个方面: 1 判定作用 报告对被抽检产品质量状况的结论,可作为政府职能部门质量监督和行政执法的依据;还可作为解决购销双方质量纠纷的仲裁依据。 2 反馈作用 质检报告中记录的产品(无论产品质量合格与否)的各项指标的实测值,及其与产品标准所规定的标准值的对比情况,以“报告”的形式反馈给企业。 3 指导作用 由于质检报告大都是由法定检验机构的试验室(均通过了…  相似文献   

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Phagocytes represent a powerful defense system against invading microorganisms that threaten the life or functional integrity of the host. The capacity to generate and release substantial amounts of reactive oxygen species is a unique property of activated polymorphonuclear and mononuclear phagocytes. The crucial role of these molecules in killing microorganisms and their consecutive contribution to tissue damage during injury and inflammation is widely known. Although much research has been done to explore the molecular events involved in the interaction of oxygen intermediates with microbes or host tissue, surprisingly little attention has been paid to the effect of reactive metabolites on the phagocyte itself. This fact is especially surprising, since it is apparent that the activated phagocyte is directly exposed to its own toxic metabolites. The potential damage occurring during excessive radical formation might notably alter the vital functions of these primarily immunocompetent cells. Moreover, the critical role of oxygen radicals in apoptosis of leukocytes has been recently revealed. Apoptosis is now supposed to represent a key mechanism in neutrophil deactivation and resolution of inflammation. Therefore, this review will focus on the delicate balance between released oxidants and antioxidative protection within the phagocytes themselves. General and phagocyte-specific antioxidative mechanisms, which have co-evolved with the radical generating machinery of phagocytes, are discussed, since the outcome of local inflammation can directly depend on this antioxidative capacity and might range from adequate elimination of the pathogen with minimal acute tissue damage to progression towards a systemic inflammatory response syndrome.  相似文献   

20.
从双向嵌入观的视角,结合中国重汽集团大同齿轮有限公司这几年的发展历程,进一步论证了核心企业或行业龙头企业本地嵌入与地方企业跨区域价值链嵌入之间的关系,提出了模块经济与链状经济有机融合的这一新的经济模式,指出了在经济全球化及我国非均衡的梯度发展背景下地方产业发展的有效路径.  相似文献   

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