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中国消费者报北京讯记者孙燕明） 8月25日是第七个全国残疾预防日。为加强残疾预防宣传教育，增强全社会残疾预防意识，提升残疾预防和康复服务水平，中国残疾人联合会、国家卫生健康委等17个部门联合开展第七个
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在化学分析与校准领域深耕多年，我深知每一次精准测量背后所蕴含的重要意义。尤其是在复杂的化工生产流程中，标准物质的选用直接关系到产品质量的稳定性与可靠性。苯中二硫化碳溶液作为一种常用的标准物质，其在高精
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