What is called self-lubricating means no need for fuel filling (dry type) or less filling (foreign named DU, DX, 500#SP).是什么意思_What is called self-lubricating means no need for fuel filling (dry type) or less filling (foreign named DU, DX, 500#SP).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句