com·mu·ta·tive /kəˈmjutətɪv, ˈkɑmjəˌtetɪv/
(a.)互相的,交替的,交換的
commutative
交換
commutative
交換
Com·mut·a·tive a.
1. Relative to exchange; interchangeable; reciprocal. -- Com*mut*a*tive*ly, adv.
Rich traders, from their success, are presumed . . . to have cultivated an habitual regard to commutative justice. --Burke.
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commutative
adj : of a binary operation; independent of order; as in e.g. "a x
b = b x a"