It is the gas that drives the exciter and accomplishes sympathetic vibration to make stickup layer break off then achieve the goal of clear for tramcar.

• 采用螺杆泵井受力测试仪器对抽油杆进行受力测试,结果表明,当抽油杆的转速达到特定值时,抽油杆会产生横向振动共振,这是造成抽油杆偏磨的动力学因素。