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DEXPS+??+
?? 5??? XPS+??+? ??? ??? ??.
?? ???? XPS+??+? ??? ??? ??? ????: ?? ??.
American Society for Testing and Materials (ASTM), XPS+??+
International Organization for Standardization (ISO), XPS+??+
British Standards Institution (BSI), XPS+??+
- 23/30442725 DC BS ISO 5861 ??. ?? ?? ??. X? ??? ???. ?? ??? ?? Al Kα XPS ??? ?? ?? ??