drag linkdræɡliŋk短语¹⁴⁴⁹⁷²⁺² 基本例句 n.拉杆 This paper describes the kinematic path of ball joint hinged at the piston rod of a separated steering assist or to steering drag link, and derives a set of equations for the path and pressure angle. 介绍了分置式转向助力机构的助力器活塞杆与转向直拉杆相铰接的球头销的运动轨迹，并推导出它的轨迹方程以及压力角的计算公式。 cnki