jackscrew
🇬🇧/ˈdʒækˌskruː/ 🇺🇸/ˈdʒækˌskrʊ/📚 60016[countable] a mechanical device consisting of a threaded rod and a nut, used to lift heavy objects or apply pressure一种由螺纹杆和螺母组成的机械装置，用于提升重物或施加压力
noun [专属名词]螺旋起重机；起重螺旋；顶丝
Ball nut, a fixed spherical nut driven by the jackscrew for flap and stabilizer movement.
球形螺母，由顶头螺钉驱动的固定球形螺母，用于翻板和稳定器运动。
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