displacement of piston meaning in English

活塞的行程容积

In the forth chapter , the performances of mr dampers designed and fabricated at chongqing university have been tested in national center for test and supervision of coach quality , including schematics of damping force vs . displacement of piston head , damping force vs . velocity of piston head , etc . for some given electric currents of the coil . the experimental results demonstrate that damping force offered by mr damper consists of background damping generated by resistance of mr fluid and damping caused by magnetic field
对不同励磁电流条件下的理论阻尼力与测试阻尼力进行了比较，分析了产生误差的主要原因；对阻尼器产生温度效应产生的主要原因进行了分析，提出了应该提高磁流变体的温度稳定性；推导了磁流变体的感性和容性流动方程，从理论上分析了磁流变体的感性和容性对阻尼器特性的影响。