“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	objective catalog objective classification objective contacts approach objective contradiction objective dialog objective evaluation objective function objective gloss objective grating objective grating and Grism objective idealism objective item objective knowledge objective knowledge organization objective knowledge theory objective [lens] objective lens objective magnification objective magnification power objective model objective of livelihood objective of national economy management objective of population control objective of resources and environment objective of water conservancy planning

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。