波音公司还进行了大量的飞行试验计划，以验证系统的设计与开发。
Boeing also performed an extensive flight-test program to validate the system's design and development.
多年来，美国中途导弹防御系统的开发已经饱受缺乏飞行试验的困扰，部分原因是由于系统复杂性所产生的故障。
The development of the midcourse missile defense system has been plagued by gaps in flight testing over the years due in part to breakdowns resulting from the sheer complexity of the system.
测试验证了垂直飞行所需的所有系统功能运作，并测量STOVL系统运行时飞机安装力量和时间。
The testing demonstrates functional operation of all systems required for vertical flight, and measures the installed forces and moments on the aircraft during STOVL operations.
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