نوع فایل power point قابل ویرایش 6 اسلاید قسمتی از اسلایدها: Class I Inherently safe; no possibility of eye damage. This can be either because of a low output power (in which cases eye d ...
نوع فایل power point قابل ویرایش 6 اسلاید قسمتی از اسلایدها: Class I Inherently safe; no possibility of eye damage. This can be either because of a low output power (in which cases eye d ...