精密滚珠丝杠短缺造成美国军工生产瓶颈。由于精密滚珠丝杠的短缺，美国军方在爱国者导弹和飞机的生产上正面临严重的交付延迟。
Precision Ball Screw Shortages Creating Bottlenecks in U.S. Military Production The U.S. military is facing significant production delays for Patriot missiles and aircraft due to a shortage of precision ball screws.
这些专用部件对于导弹和飞机的制造至关重要，但美国有限的生产能力已成为关键的制约因素。
These specialized components are essential for missile and aircraft manufacturing, but limited U.S. production capacity has created a critical choke point.
在密歇根州设有工厂的意大利制造商Umbragroup的尼克·科拉尔（Nick Kolar）表示，自2020年以来，对这些丝杠的需求增长了多达50%。
Nick Kolar of Umbragroup, an Italian manufacturer with a Michigan facility, reports that demand for these screws has risen by as much as 50% since 2020.
这种短缺，加上在采购稀土磁铁和火箭发动机方面遇到的困难，正在阻碍特朗普政府补充因伊朗冲突而消耗的武器系统的努力。
This shortage, alongside difficulties sourcing rare-earth magnets and rocket motors, is hindering the Trump administration's efforts to replenish weapons systems depleted by the conflict in Iran.