中国消费者报报道记者张文章）虽然上海黄金交易所公布的实物黄金价格单日内基本稳定，但在黄金首饰消费者眼中，却有一千种金价。今年“三八妇女节”期间，福建省福州市一些黄金珠宝店为了促销，拿黄金价格“大变魔术
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甲烷二磺酸亚甲酯MMDS）作为锂离子电池电解液中的关键添加剂，其含量控制直接影响电池的高温循环性能与使用寿命。然而，由于MMDS在强酸强碱条件下易水解、高温环境下易分解的特性，其检测过程对标准品的纯度
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