NIM is the signatory to the Mutual Recognition Arrangement( MRA) for national measurement standards and for calibration and measurement certificates issued by national metrology institutes.是什么意思_NIM is the signatory to the Mutual Recognition Arrangement( MRA) for national measurement standards and for calibration and measurement certificates issued by national metrology institutes.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句