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多度盘电工仪器倍率量程组合示值误差的讨论
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作者 林骐 《计量技术》 北大核心 1999年第4期42-44,共3页
本文对现常见的多量限多度盘电工仪器倍率量程组合示值误差的计算方法所存在的问题进行了讨论,并同时提出了作者较为简捷的新的计算方法,这对准确、方便地判断仪器是否合格有极大的益处。
关键词 多度盘 电工仪器 倍率量程 组合示值误差
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量程倍率自动转换装置
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作者 张伯文 《自动化仪表》 CAS 北大核心 1989年第1期27-29,18,共4页
本文介绍的量程倍率自动转换装置,不仅解决了变化快、用人工无法测量的物理量,而且因它具有其独立性,也克服了因线路某一元件出了故障而影响整个仪器正常工作的弊病。文中对该装置的传感器及其转换系统部分作了简要地阐述。
关键词 自动转换装置 量程 物理测量仪
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Vibration Characteristics of Detached Houses in Japan by Onethird Octave Band Frequency to Environmental Vibration Estimation
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《Journal of Civil Engineering and Architecture》 2011年第11期1019-1026,共8页
In recent years, the complaints against the vibration as environmental pollution tends to increase gradually in Japan. The measurement investigation to demonstrate the actual situation of the environmental vibration w... In recent years, the complaints against the vibration as environmental pollution tends to increase gradually in Japan. The measurement investigation to demonstrate the actual situation of the environmental vibration was carried out for several years. The measurement manual for each vibration source such as operations of factory machine, construction works, road traffics and railways to unify measurement methods was made at the start. From the measurement investigation, the vibration amplification characteristics of the detached house by one-third octave frequency in Japan was analyzed as a purpose to improve estimated precision of the vibration in a detached house. In this paper, the vibration amplification characteristic expressed at onethird octave band frequency was shown, and the characteristics was arranged about a result measured with 27 detached houses in Japan. 展开更多
关键词 Vibration as environmental pollution COMPLAINTS measurement manual Japanese house vibration characteristics.
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