k8凯发|这种膜料不再“卡脖子”了
山东省是茂金属膜料最大的消费地区=◁▷,每年消耗量约50万吨▪◁●。齐鲁石化将紧盯市场动...
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半导体指常温下导电性能介于导体与绝缘体之间的材料●-■。半导体在集成电路◁▽▽、消费电子...
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