A critical factor limiting precision length measurement is insufficient temperature stabilisation, significant temperature gradients or heat introduction in precision engineering and measurement instrumentation. In the EURAMET Joint Research Project IND13 researchers from National Metrological Institutes from Germany (PTB), France (LNE), Great Britain (NPL), the Netherlands (VSL) and research institutes like TU llmenau (Germany), Ecole Nationale Superieure de Mecanique et d'Aerotechnique (France) and Fraunhofer Gesellschaft (Germany) are working together on improvements in this research field [1].
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机译：限制精度长度测量的临界因素不足，温度稳定，高温梯度或精密工程和测量仪器的热引入不足。 在Eurarmet联合研究项目中，来自德国（PTB），法国（LNE），英国（NPL），荷兰（VSL）和TU LLMENAU（德国）等研究机构的研究人员，ECOEL Nationale Superieure de Mecanique等 D'Aerotechnique（法国）和Fraunhofer Gesellschaft（德国）正在努力改进本研究领域[1]。
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