1. Two directional stop is necessary to gearbox's design of power-driven winching at electric power industry. 实现止动是电力机动绞磨用变速箱设计必须满足的工作要求。
2. Downey and Fecteau had been secured to the aircraft with harnesses to keep them from falling out during the winching. 在此之前,为了防止操纵绞盘时摔出飞机,唐尼和费克图已系好安全带固定在飞机上了。
3. According to engineering characters and concrete situation the winching and rocker integral hoisting method is adopted. 针对该网架的工程特点及现场的具体情况,决定采用绞磨拔杆整体吊装方法。