The author introduces the methods of oil recovering from spent bleaching earth , regeneration of spent bleaching earth and household cleanser producing by using spent bleaching earth.是什么意思_The author introduces the methods of oil recovering from spent bleaching earth , regeneration of spent bleaching earth and household cleanser producing by using spent bleaching earth.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句