“普拉特指标”的概念、定义、翻译、参考文献-科学参考

单词	普拉特指标
释义	普拉特指标 Encyclopedia 理学文献计量释 Pratt's index普拉特指标度量文献计量学中等级-频次分布的集中程度的指标。
随便看	passenger cabin passenger car passenger cargo vessel passenger conveyor passenger flow passenger flow guidance passenger flow organization passenger information service system passenger information system passenger liability insurance passenger railway network passenger ropeway passenger ropeway accident passenger service passenger ship passenger statistics passenger terminal passenger terminal layout passenger traffics passenger train line plan passenger transfer efficiency passenger transfer facility passenger transferring transportation passenger transfer volume passenger transportation hub

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。