来源:[1] 诺斯罗普·格鲁曼:不断增加的挑战可能继续拖累股价(纽约证券交易所代码:NOC)| Seeking Alpha (https://seekingalpha.com/article/4830698-nort ...)[2] 诺斯罗普·格鲁曼:不断增加的挑战可能继续拖累股价 (https://seekingalpha.com/article/4699999-nort ...)[3] 诺斯罗普·格鲁曼应对数十亿美元的项目挫折和市场逆风 | FinancialContent (https://vertexaisearch.cloud.google.com/groun ...)