In order to decrease the vertical vibration of rolling stock, the air springs with variable damping oil dampers inside are developed. The variable damping can attenuate effectively vibration.是什么意思_In order to decrease the vertical vibration of rolling stock, the air springs with variable damping oil dampers inside are developed. The variable damping can attenuate effectively vibration.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句