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电线电缆偏心度的在线测量技术 被引量:7
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作者 陈仲民 程振杰 《南京邮电学院学报》 北大核心 1995年第3期81-87,共7页
讨论了电线电缆偏心度的在线测量技术,这种偏心测量装置的研制对提高电线电缆产品的质量和设备的效率具有重要意义。其原理和方法是新颖的。这一偏心测量装置中的感应传感器是我们自己研制的,作者对其特性提出了自己的见解。这一装置... 讨论了电线电缆偏心度的在线测量技术,这种偏心测量装置的研制对提高电线电缆产品的质量和设备的效率具有重要意义。其原理和方法是新颖的。这一偏心测量装置中的感应传感器是我们自己研制的,作者对其特性提出了自己的见解。这一装置适用于各种圆形同心电线电缆的连续非接触测量。 展开更多
关键词 电线电缆 偏心度 在线测量 通信电缆
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A Formulation of Poincare's Intuitive Concept of Linear Continuum * 被引量:1
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作者 徐利治 徐铁生 《Journal of Mathematical Research and Exposition》 CSCD 北大核心 2003年第4期635-643,共9页
Henri Poincare's intuitive concept of the linear continuum was described by his famous remark which was noted by Bertrand Russell, and in which the notion of 'intimate bond' first appeared. This semi-expos... Henri Poincare's intuitive concept of the linear continuum was described by his famous remark which was noted by Bertrand Russell, and in which the notion of 'intimate bond' first appeared. This semi-expository paper gives an exposition of Poincare's remark, and also aims at a formulation of the intimate bond with the aid of introducing a kind of 'leap structure' into Robinson's *R as a supplemental construction. As a result, we obtain a kind of hyperstandard model that may be called 'Poincare continuum'. 展开更多
关键词 Poincare's intimate bond leap-structure Poincare continuum semi- infinitesimal.
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