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Abstract: In the paper a kind of new idea based on electric field theory is advanced,which is used in research of forming law of electrochmeical perforation with fixed cathode.According to it,the changing law of electric intensity,current density,velocity
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文摘:根据电场理论，提出了一种研究固定阴极电化学射孔成形规律的新的处理方法，分析了该加工方式下阴极表面电荷密度及加工区的电场强度、电流密度、加工速度等在加工过程中的变化规律，为这种简易加工方式的合理应用提供了严密的理论依据。 |
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Abstract: In the paper the deterrent content and the concentration of diphenylamine dibuty l phthalate and centralite Ⅱ in finished product manufactured by two different methods were analyzed by high performance liquid chromatography, which can provi dere
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文摘:利用高效液相色谱仪分别测定了发射药在两种制备工艺中的钝感剂邻苯二甲酸二丁酯和二号中定剂的含量及邻苯二甲酸二丁酸在其中的浓度梯度分布，为调整发射药制备工艺提供了参考。 |
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Abstract: In the paper, bifurcation phenomena of one kind of reaction-diffusion equations are investigated. Used singularity theory based on the method of L-S(Liapunov-Schmidt), satisfactory results are obtained.
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文摘:文章讨论了一类反应扩散方程的分歧(分岔)现象.运用所谓基于L-S(李雅普诺夫-施密特)约化的奇异理论方法,得到了满意的结果. |
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Abstract: In the paper, the hot crack for the forging die made by methodsof squeeze casting is analyzed, how to reduce the hot crack is also given out.
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文摘:从生产实际出发，分析了锻模液态模锻成形过程中热裂纹形成的主要原因，提出了降低锻模热裂纹的几点措施。 |
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Abstract: In the paper,technical modification of the heating furnace attached to the Broad and Thick Plate Plant in Jigang is presented,which includes the analysis of existing problems of the furnace before modification,and modification measures and using
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文摘:介绍了济钢宽厚板加热炉的技术改造情况，内容包括改造前炉子存在问题的分析，炉顶及滑轨等部位的改造措施和使用效果等。 |
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Abstract: In the paper,the concept of respirable dust and elemental demend of experimental respirable dust were introduced,the production method of respirable dust was studied,and the efficiency was tested and analysed.
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文摘:介绍了呼吸性粉尘的概念，试验粉尘的基本要求，研究了试验呼吸性粉尘的制备方法，并对研制的滤料阻尘效果进行了测试分析。 |
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Abstract: In the paper,the types,characteristics,planning and evolution of wetland ecosystem in Yellow River Delta have been analyzed,and its protection has been discussed.
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文摘:本文对黄河三角洲湿地生态系统的类型、特征、演替、演化进行了分析，并探讨了有关保护对策。 |
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Abstract: In the present paper the progress was reviewed in the active filler metals with different temperatures for ceramic to metal brazing and related brazing technique of reducing joining-gap residual stress.It was recommended that the key developing
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文摘:阐述了陶瓷/金属钎焊用不同温度的活性钎料及以降低焊缝残余应力为中心的钎焊工艺进展；指出：在我国耐高温、抗氧化性优良的高温耐热型活性钎料是重点发展方向；介绍了降低焊缝残余应力的钎焊工艺和焊缝中间添加过渡层的选择原则。 |
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Abstract: In the research of internal combustion engine,recordingin-cylinder pressure and temperature is an essential technique to study the thermal cycle of internal combustion engine.The combustion analyzer developed in this study will give both the mea
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文摘:为了测录内燃机缸内的压力及温度，开发了一种内燃机燃烧分析仪.该分析仪由国产高速数据采集卡及自行开发的控制软件组成.它不仅能精确设置每度曲轴转角内采样点的个数和采集循环数，而且在采集过程中能实时计算和表征内燃机工作过程的压力升高率、平均指示压力、循环变动率、放热率等参数.经实际使用以及与国外产品相比表明，此分析仪具有全中文界面、价格低、操作简单、使用维护方便、功能便于扩充等优点. |
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Abstract: In the research of the problem about human in modern western society,the Frankfurt School held a important position.
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文摘:在现代西方关于人的问题的研究中，法兰克福学派占有很重要的地位，而弗洛姆无疑是法兰克福学派的主要代表人物之一。 |
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Abstract: In the survey of disposable sanitary products on Beijing market, it was found that 39.5%of them were disinfected with chemical method, 33.5%with ionizing radiation disinfection and others with heat and ultraviolet disinfection.
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文摘:调查北京市售一次使用性卫生用品，39.5%用化学法消毒，33.5%用电离辐射消毒，其余用热力与紫外线消毒。 |
