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Abstract: The paper interprets alternant polarization phenomen on of even alternant hydrocarbons by discussing charge density on every position of even alternate when it is polarized using perturbational molecular orbitals( PMO).
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文摘:本文用微扰分子轨道法(PMO)讨论了偶交替烃被极化时各位置上的π电荷密度，解释了偶交替烃π电荷的交替极化现象。 |
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Abstract: The paper introduced the optimization of chemical composition of rare earth microalloy.
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文摘:对玻璃模具材质的化学成分进行了合理设计和优选。 |
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Abstract: The paper introduces a forming process and design of progressive die for moveable spring used on a relay,and it carries on a process of double-layer forming and a way to protect useless stuff from jumping onto bottom plate.
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文摘:介绍了某继电器中的动簧片成形工艺确定和级进模设计、在级进模中叠片成形及防止小废料上带的一种方法。 |
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Abstract: The paper introduces a method to save and link the product graphics with application software.Based on VB and OLE,the system is driven by database.It can simplify the designers' work and improve the efficiency.
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文摘:介绍了一种利用VB及内嵌的数据库引擎技术，结合OLE技术设计产品图档数据库，实现产品图形数据的存储及与应用程序的链接，进而实现产品图档管理，构建产品设计环境的简便而有效的方法，该法可简化设计人员的操作，使其只需关注产品的设计，从而提高设计效率。 |
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Abstract: The paper introduces a scheme of an automatic control s ystem for freeze-drying process procedure.The scheme is composed of supervisory personal computer,PLC and singlechip processor system.
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文摘:提出了一套冷冻干燥生产过程自动控制系统的实现方案,该方案由上位计算机、PLC和单片机小系统组成。 |
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Abstract: The paper introduces briefly the retrofit of the cleaning equipment and the operating results of the cylinder type bag filter in the fluidization systems for the copper smelting flash furnace.
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文摘:简要概述了闪速炉气力输送系统收尘装置的改造和圆筒型布袋收尘装置在气力输送系统中使用的效果。 |
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Abstract: The paper introduces in detail the design and calculation of large-scale oxygen-heavy oil jet(heat-supply ability 1.6t oil/h)which melts down waste iron and steel,and its structural characteristic.
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文摘:详细介绍了熔化废钢铁用的供热能力为1.6吨油/小时大型氧气-重油喷枪的设计与计算过程，以及喷枪的结构特点。 |
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Abstract: The paper introduces the application of rigid frame arch bridge and truss arch bridge in Fuyang city and their types, structures, designs as well as analysis of characteristics of the weight bearing.
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摘要:介绍了刚架拱桥及桁架拱桥在阜阳市的应用及其型式、构造、设计和受力特征分析。 |
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Abstract: The paper introduces the function,composition,characteristics and the process of operation for the Russian antiaircraft missile system TOP-M1.From the point of the system requirements,the main technologies adopted is introduced in the two radar
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文摘:介绍了俄罗斯“道尔-M1”防空导弹武器系统的功能、组成、特点和作战过程，并从武器系统的总体需求出发，介绍了其两部雷达所应用的主要技术。 |
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Abstract: The paper introduces the hinge mount forming process, designsforming die structure, and analyzes the die working process and main designing points.
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文摘:介绍了铰链座的成形工艺，设计了弯曲成形模的结构，分析了其模具工作过程和模具设计要点。 |
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Abstract: The paper introduces the main characteristics and advanced technology of the casting and rolling machine in BOHAI aluminium company. The machine is imported from PECHINEY company in France.
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文摘:介绍了渤铝公司引进法国PECHINEY公司研制的3C铝板铸轧机的主要特点和先进技术。 |
