¥iºûÅ@©Ê
¥iºû“°©Ê
The ease with which maintenance of a functional ¡¼unitúI can be performed in accordance with prescribed requirements.
¨Ï¥\¯à³¡¥ó¯à«ö³W©wn¨D§¹¦¨ºû× ªºÃø©öµ{«×¡C