“Ullman conditions”的概念、定义、翻译、参考文献-科学参考

单词	Ullman conditions
释义	Ullman conditions Encyclopedia 理学乌尔曼条件释 Ullman conditions乌尔曼条件美国学者乌尔曼对1948年美国发布的铁路货运流数据进行研究后，提出两个地点之间发生空间相互作用需满足互补性、干预机会、可运输性三个基本条件。
随便看	regular element regular element of a Lie algebra regular embedded graph regular embedding regular endpoint regular error regular estimator regular event regular exhaustion regular expression regular extension regular extension field regular exterior measure regular extremal regular face regular factor regular factorization regular falsi regular fibration regular field regular field extension regular filter regular filtration regular first integral regular fixed point

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