rule of commutativity
... 交换性氮 exchangeable nitrogen 交换性规则 rule of commutativity 非交换性钠 exchangesodium ...
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新要素禀赋、网络效应、可乐定理、“知识产权可取得性”等是新的市场规则，体现了新的价值规律和商品交换关东。
New elements endowment, network effect, Cola principle and "the availability of intellectual right" are the new market regulations, which reflect the new law of values and goods-exchanging relation.
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