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交换律 jiāohuànlǜ
avia. rate of exchange
IT law of communication
oil commutativity law; law of commutation
sport., med. commutative law
交换 〔互换,对易〕律
math. commutative law
交换 律: 10 phrases in 7 subjects
Bridge construction1
Business1
Economy1
Electronics1
Genetics2
Mathematics3
Technology1