The Bell X-5 gave NACA and Air Force researchers a chance to test out variable-sweep wings.
在贝尔x - 5和空军赋予的NACA研究人员一个机会来测试可变后掠翼。
2
The internal synthesizer provides variable frequencies from 1 MHz through 1000 MHz covering the UHF, VHF, and video bands with automatic sweep capability.
内部合成器提供可变频率从1兆赫到1000兆赫覆盖超高频，甚高频和视频带自动扫描功能。
3
A numerical method to obtain a complete solution of the dynamic response of a variablesweep wing aircraft in the course of changing the angle of sweep is presented in this paper.