It is the latest design,using symmetric spherical roller , two pcs of pressed steel cages,flangeless inner ring & guide ring centred on the cage.是什么意思_It is the latest design,using symmetric spherical roller , two pcs of pressed steel cages,flangeless inner ring & guide ring centred on the cage.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句