液压千斤顶
/haɪdɹˈɔːlɪk ˈdʒak/
n
English: hydraulic jack · 液压千斤顶
释义：Mechanism composed of a cylinder and a piston and activated by hydraulic pressure; it allows the landing gear to be deployed by turning a crank.
English: hydraulic jack · 液压千斤顶