单词	长期固定区
释义	长期固定区long term fix area
随便看	commutation zone commutative commutative algebra commutative banach algebra commutative cochain commutative contract commutative diagram commutative element of group commutative group commutative justice commutative law commutative law of addition commutative law of multiplication commutatively commutative matrices commutative matrix commutative operation commutative operator commutative principle for addition commutative principle for addition--cpa commutative principle for addition，cpa commutative principle for multiplication commutative principle for multiplication--cpm commutative principle for multiplication，cpm commutative product