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中铁第四勘察设计院新专利如何改变轨道交通?
宝子们,你们知道吗?最近有一项新的发明专利正悄悄地在改变咱们的出行方式。2025年4月16日,金融界报道了国家知识产权局的信息显示,中铁第四勘察设计院集团有限公司申请了一项名为“轨道交通用防杂散电流绝缘扣件及其绝缘方法”的专利(公开号CN119824 ...
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Trump lashes out at Powell
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