共查询到19条相似文献,搜索用时 406 毫秒
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DS3微倾式水准仪为具有俯仰微倾机构的定镜式水准仪.利用微倾机构可迅速把视准轴(借助于管状水准器)精确地调整至水平位置。引起DS3微倾式水准仪;角误差的因素很多.笔者将按常规调修方法依次讲解8个方面的问题(以S3E型水准仪为例)。 相似文献
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本文以一种较常见的水准仪检定装置为例,论述了DS3、DSZ3级水准仪的水平视准线误差(i角)测量不确定度的分析过程。 相似文献
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DS3级水准仪i角误差变化的调修方法 总被引:1,自引:0,他引:1
水准仪是以仪器的水平视准线作为基准线.进行高羞测量的计量器具。望远镜视准线不平行于水准管轴所产生的i角误差.是水准仪的一项重要误差。引起DS3级水准仪i角误差变化的因素很多.本文主要谈谈以下几个因素及其调修方法: 相似文献
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Experimental Mechanics at the Nanometric Level 总被引:1,自引:1,他引:0
C. A. Sciammarella 《Strain》2008,44(1):3-19
Abstract: This article describes research carried out in the field of optical super-resolution. The main goal of this study was to go beyond the Rayleigh limit in conventional optics and observe phenomena at the nano-range, because in certain circumstances methods such as X-ray and electron microscopy cannot be applied because of their influence on the observed specimens. In summary, the presence of a small polystyrene sphere on the optical field of a conventional optical microscope seems to have converted the microscope into a device capable of functioning beyond the classical limit of resolution. This means that the near-field generated by evanescent illumination can be sensed by a microscope. Detection of particles in the range of a few tens of nanometres was achieved. 相似文献
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Gene T. Troskey 《Engineering Management Journal; EMJ》2013,25(2):24-30
ABSTRACTSuccessful management of technological innovation is needed to restore U.S. industrial competitiveness. To respond to this need, American companies must unleash the innate creativity of individual employees. They must also promote lifelong learning to overcome the potential obsolesence of the technical workforce threatened by rapid technological change. This paper discusses innovation and employee education at IBM. It focuses on people management and the needs of the employee for job enjoyment and social support. Some unique methods for fostering grass-roots innovation through lectures, focus groups, symposia, and computer-mediated brainstorming are high-lighted. 相似文献
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Abstract The efficiency of total power transformation and the signal level of the fibre optical confocal scanning microscope are investigated, including defocus effects. A comparison of the signal level with those for pinhole and slit detectors is given. 相似文献
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Gakhramanov N. F. Adygezalov V. S. Dzhamilov R. S. Aliev T. T. 《Measurement Techniques》2003,46(9):876-879
An improved construction of the UKh-2 level meter is described, in which a new sensor inductance coil circuit is employed, which enables the unmeasurable layer of liquid at the bottom of the container to be reduced. The main constructional features and electric circuit of the level meter are given, and its fundamental technical characteristics are presented. 相似文献
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