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Abstract: It is proved that a small circular aperture has the positive and minus focal distances,and the research experiments for small aperture glasses are introduced concisely.
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文摘:提出了证明小圆孔具有正、负焦距的一种方法，简要地介绍了关于小孔眼镜的实验研究. |
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Abstract: It is shown in this paper that distributions of electric fields in five measuring slots of Uster Evenness Tester,and the errors caused by uneven electric fields were analysed.According to the results of measuring and analysing electric fields,a
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文摘:实测了乌斯特纱线均匀度试验仪上5个电容测量槽的电场强度分布,分析了由测量槽不均匀电场所引入的误差.系统地测试分析了第5号槽误差,获得了几种误差的定量估计.最后给出了正确使用仪器,避免测量误差所应注意的几点结论. |
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Abstract: It is studied that milling time,carbon content,inhibitor and sintering effect on properties of the submicron cemented carbides.
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文摘:研究了球磨时间、碳含量、抑制剂以及烧结对超细硬质合金性能的影响。 |
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Abstract: It is summarized and discussed detailedly the ways and features of quality control in producing mixture with wet millingspray drying process.
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文摘:对湿磨－喷雾干燥工艺混合料生产中的质量控制及其特点做了比较详细的介绍和讨论。 |
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Abstract: It is the fact that more and more prestigious international luxury retailers are finding a fertile market in China; the international real estate developers are favoring China, developing and constructing shopping centers.
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摘要:国际知名奢侈品零售商纷纷进驻中国，国际房地产开发商也瞄准中国，开发建造购物中心。 |
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Abstract: It is the first time to use powder damping technique in reducing the vibration and noise of cold saw clamp.Through measurement and analysls of the noise reduction effects and frequency spectrum, it is found that powder damping is a simple and pr
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文摘:把粉体阻尼技术首次用于冷锯机夹盘的减振降噪，通过对其降噪效果及频谱的测量分析，发现粉体阻尼不但是一种简单实用的技术而且对夹盘的强度和固有特性影响小。 |
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Abstract: It is unavoidable to pollute farm products and environment by using chemicals to control pests.
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文摘:研究表明，使用农药防虫，不可避免地对农畜产品及环境带来污染。 |
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Abstract: It is well recognized that the safety management in enterprises must be strengthened in the course of reformation.
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文摘:在改革过程中，安全工作只能加强，不能削弱，已成共识。 |
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Abstract: It presents a new design method for pressure vessel in plasticstate with the help of FEM, and gives an optimized thick or profile design.
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文摘:以失效前材料全部进入塑性为设计准则，对压力容器提出了用有限元法进行了优化设计的方法。 |
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Abstract: It presents the theory and structure of computer aided assembly process planning system based on the agile manufacturing mode, and analyzes the modules which make up of this system，including the acquiring of assembly information，the construction
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文摘:介绍了敏捷制造模式下的装配工艺设计系统的原理与体系结构，对系统中装配信息的获取、装配工艺知识库的建立、装配顺序的决策以及装配仿真的实现等几个模块进行了具体的分析。 |
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Abstract: It proposes a model for shaft centerline measurement and winding level,gives the coordinates transformation formula of measured data,and develops the program diagram for centerline measurement of wind-shaft.
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文摘:提出了一种便于微机处理的轴线的空间解析表达方法以及轴线弯曲程度的表示方法，给出了轴线测量数据获取方法与坐标转换公式，提出了零件轴线弯曲时精密测量的一般步骤。 |
