玻璃玻璃化学稳定性较高

（2025-08-17 16:32）

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随着我国对环境空气污染物监测要求的不断提高，多氯联苯PCBs）作为持久性有机污染物POPs）的重要成员，其准确测定对环境保护和公共健康至关重要。为满足HJ 902-2017《环境空气 多氯联苯的测定

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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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