Contributions of precision engineering to the revision of the SI.

Contributions of precision engineering to the revision of the SI.
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DOI:
10.1016/j.cirp.2017.05.003
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发表时间:
2017
期刊:
CIRP annals ... manufacturing technology
影响因子:
--
通讯作者:
Morantz P
Morantz P
中科院分区:
其他
文献类型:
--
作者:
Bosse H;Kunzmann H;Pratt JR;Schlamminger S;Robinson I;de Podesta M;Shore P;Balsamo A;Morantz P

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在科学和工业中进行的所有测量都基于国际单位制,SI。有人建议按照重新定义长度单位米的方法修订国际单位制,即通过固定所谓定义常数的数值来定义国际单位制单位,包括c、h、e、k和NA。我们将讨论修订背后的原因,该修订可能会在2018年生效。精密工程对于实现所需的小测量不确定性和定义常数的测量结果一致性至关重要。
All measurements performed in science and industry are based on the International System of Units, the SI. It has been proposed to revise the SI following an approach which was implemented for the redefinition of the unit of length, the metre, namely to define the SI units by fixing the numerical values of so-called defining constants, including c, h, e, k and NA. We will discuss the reasoning behind the revision, which will likely be put into force in 2018. Precision engineering was crucial to achieve the required small measurement uncertainties and agreement of measurement results for the defining constants.
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