以下为句子列表：
英文: 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.
中文: 中国计量科学研究院于1999年代表中国签署了“国家计量基标准及国家计量研究院出具的校准和测量证书相互承认协议”。
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