共查询到10条相似文献,搜索用时 62 毫秒
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作者研制生产的电子测时仪得到长期广泛的使用,具有一定的影响力.但在某些特殊环境使用时,由于对仪器性能和测试方法不甚了解,对来自各方面的干扰处理不当,以致影响测试效果.文中针对一些典型的干扰现象进行讨论并提出解决的方法. 相似文献
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计量标准是否符合量值传递的要求,是我国计量标准考核工作的主要目的和意义。考核内容很多也比较全面,但对计量标准的计量性能有一些量化指标现在我国的考核手段考核人员只能得到一些离散的信息,无法一确考察计量标准过程控制的一些条件和办法简述。 相似文献
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应用互功率谱测表面声强,仪器通道相位差难以解决.本文探讨了能够回避仪器通道相位差测量表面声强的新方法,并进行了相应的试验研究. 相似文献
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Sandra Pousette Martin Löfgren Birgitta Nilsson Anders Gustafsson 《Packaging Technology and Science》2014,27(9):727-738
There are several reasons why people find it troublesome to use and handle consumer packages. The European Committee for Standardization recently suggested a technical specification (TS) regarding packaging and ease of opening. The present study has expanded the procedure by including consumer satisfaction measurements in two steps and engaging panels comprising two separate age groups. The expanded method, which used six different packages as test objects, engaged 75 panellists, 40 in the older group (65–80 years) and 35 in the younger group (25–40 years). The expanded method not only included the same operations as described in the TS but also included panellists who graded each handling element separately on a ‘smiley’ scale, along with feedback for their grades and an overall judgement of the package handling. The grading feedback differed between the two groups. The younger panellists mainly noted issues that were not connected to openability, while older panellists noted openability as the most influential factor. Further analysis revealed that openability was also a key issue for the younger panellists, despite their claims to the contrary. Satisfaction was the most critical TS element for describing a package as being easy to open. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献