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1. ISO9497 Fluorspar-Experimental methods for evaluation of quality variation(өʯ£­ÆÀ¼ÛÆ·Öʲ¨¶¯µÄÊÔÑé·½·¨)
2. ISO9498 Fluorspar-Experimental methods for checking the bias of sampling and sample preparation(өʯ£­Ð£ºËÈ¡ÑùÆ«²îµÄÊÔÑé·½·¨)
3. ISO9499 Fluorspar- Methods of determining the precision of  sampling and sample preparation(өʯ£­È¡ÑùºÍÖÆÑù¾«ÃܶȵÄÊÔÑé·½·¨)

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