Type ECKZ is a sprag type freewheels bearing supported and self-contained in a cast iron housing.Standard lubrication is oil.是什么意思_Type ECKZ is a sprag type freewheels bearing supported and self-contained in a cast iron housing.Standard lubrication is oil.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句