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美国工业界分析人士指出，美国航宇工业正经历一个艰难的过渡时期，它在世界市场的份额正在降低，其主要原因之一应归咎于美国政府对航宇工业的支持不够，特别是预研经费一直在逐年下降
U.S. industry analysts pointed out that U.S. Aerospace Industry is undergoing a difficult transition period and its share in the world market is declining. One of the main reasons is due to the lack of support from the U.S. government for Aerospace Industries, especially the pre-research The funding has been declining year by year