HVD variable speed clutch is an application of the technology of hydroviscous drive.It bases its driving mechanism on the law of Newton internal friction.是什么意思_HVD variable speed clutch is an application of the technology of hydroviscous drive.It bases its driving mechanism on the law of Newton internal friction.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句