double hook短语¹⁴⁴⁹⁷²⁺² 基本例句 双钩 This single track double hook lifting staggered operation system was proven in practice to be stable and practical, thus solving the projecting problem in the incline transformation. 在实践中,验证了单线轨道双钩提升错动运行系统的稳定性和实用性,解决了斜井整改的突出问题。 www.jsks.net.cn