| 单词 | symmetric difference | 
| 释义 | symmetric difference in British English mathematics (of two sets)   See full dictionary entry for  differencea.  the set of members of the first that are not members of the second  Symbol: A – Bb.  the set of members of one but not both of the given sets   Often symbolized: A + Bsymmetric difference in British English (sɪˈmɛtrɪk ˈdɪfərəns) noun  mathematics  the set of members of one but not both of the given sets   | 
	
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