“乌尔曼条件”的概念、定义、翻译、参考文献-科学参考

单词	乌尔曼条件
释义	乌尔曼条件 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	standardization review standardization system of sports industry standardized standardized achievement test standardized coefficient standardized design standardized design of ground engineering standardized design of machinery standardized distribution standardized fertility rate standardized frequency function standardized function standardized gap standardized moment standardized mortality ratio standardized normal distribution standardized random variable standardized realization standardized regression coefficient standardized sample value standardized score standardized test standardized training of residents standardized training of specialist standardized variable

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。