In the design of balanced seal,the barrel type seal has adopted a new-type material of wear resistant corundum to enable no failure for many years.是什么意思_In the design of balanced seal,the barrel type seal has adopted a new-type material of wear resistant corundum to enable no failure for many years.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句