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6月18日上午，青岛金晶创立30周年暨压延三线技改投产仪式举行。西海岸新区工委副书记、区长王清源出席活动并致辞。王清源在致辞中指出，西海岸新区坚定不移把实体经济作为立区之本、强区之基，聚焦“5+5+7
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在化学研究的广阔天地里，每一种标准物质的选用都关乎实验结果的准确性和可靠性。多年从事化学分析与研究的经历，让我深刻体会到，乙醇中硝基苯溶液标准物质作为一类重要的化学参考物质，其重要性不言而喻。它不仅在
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