The tribological properties of the prepared UFD sulfonic acid derivant in the water-base solution were evaluated by using a four-ball friction wear testing machine.
一種唯一可標識一特定磁盤文檔的序列表,它是一個從UFD(用戶文檔目錄)到包含特定文檔的目錄並加之文檔的文檔名和副檔名的目錄系列。
The ordered list that uniquely identifies a specific disk file. It is the sequence of directories from the UFD ( user file directory ) to the directory containing the specific file, plus the file name and extension of the file.
