“常年性河流”的概念、定义、翻译、参考文献-科学参考

单词	常年性河流
释义	常年性河流 Encyclopedia 工学〔主要名词〕释 perennial stream常年性河流常年流水不断的河流或受人类活动影响偶尔断流的河流。世界上绝大部分河流均为常年性河流。
随便看	sample characteristic sample characteristic value sample cluster sample coefficient sample coefficient of variation sample coins of the Qing dynasty sample collection sample complexity sample confirming sample continuity sample correlation coefficient sample correlation matrix sample covariance sample covariance function sample covariance matrix sample data sampled data sampled-data computer sampled-data control sampled-data control systems sampled-data control theory sampled-data system sample deciles sample design sample detection limit

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。