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[×ÊÔ´] CIF´íÎóÌáʾµÄ·­ÒëÒÔ¼°¾À´í½ÓÁ¦

ΪÁË´Ù½ø¹ã´ó³æÓѵĽ»Á÷ѧϰ£¬±¾ÈËÏÈ×éÖ¯Ò»´Î¼¯ÌåÌÖÂÛѧϰ£¬ÎÒ°Écheck cifÖеÄÖ÷ÒªÎÊÌâ·ÖÅúÁгö£¬´ó¼ÒÒ»Æð·­Ò룬²¢ÓèÒÔÖ¸³ö¸Ä´í·½·¨¡£Å¼µÄÓ¢ÓïˮƽÓÐÏÞ£¬²»Í×Ö¸³öÍûÅ£È˼´Ê±Ö¸³ö£¬ÎÒ½«¼´Ê±¸üÕý¡£Ï£Íû´ó¼Ò»ý¼«²ÎÓ룬ÓÈÆäÊÇ´óÅ£ÃDz»ÒªÁßϧŶ
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-------------------------------------------------------------------------------
_020 : Check on R(int)                     R(int)¼ì²é
-------------------------------------------------------------------------------

R(int) should be well below 10% and in the order of magnitude of the
reported R-values. R(int) may be relatively meaningless when based on a very
limited number of averaged data.
R(int)ÒÔ¼°Æä±¨µÀµÄRÖµµÄÊýÁ¿¼¶Ó¦¸ÃСÓÚ0.1¡£ »ùÓڷdz£ÓÐÏÞÊýÁ¿µÄƽ¾ùÊý¾ÝµÄR(int)ûÓÐʲôÒâÒå¡£

-------------------------------------------------------------------------------
_021 : Check ratio of observed/expected number of reflections
¼ì²é ¿É¹Û²âÑÜÉäµãÊýÄ¿/ÆÚÍûÑÜÉäµãÊýÄ¿µÄ±ÈÖµ
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The expected number of reflections corresponds to that in the
asymmmetric unit of the Laue group.
Expected ratio:  less-or-equal 1 for centro symmetric structures and
less than 2 for non-centrosymmetric structures.
ÆÚ´ýÊýÄ¿¶ÔÓ¦ÓÚÀͰ£ÈºµÄ²»¶Ô³Æµ¥ÔªÖеÄÊýÄ¿
¶ÔÓÚÖÐÐĶԳƵĽṹ£¬ÆÚÍûֵӦСÓÚµÈÓÚ1£¬¶ÔÓÚ·ÇÖÐÐĶԳƽṹӦСÓÚ2

Reasons to exceed those numbers can be:

1 - Systematic extinction not omitted from the observed data count
2 - Refinement with redundant (i.e. not averaged/unique) data set.
¿ÉÄܳ¬±êµÄÔ­Òò£º1£¬¶Ô³ÉÐÍÏû¹âûÓдӹ۲âÊý¾ÝÖÐÏû³ý¡£  2£¬²ÉÓÃÁ˹ý¶àµÄÊý¾Ý½øÐо«ÐÞ¡£
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ÒýÓûØÌû:
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