“classification on farmland”的概念、定义、翻译、参考文献-科学参考

单词	classification on farmland
释义	classification on farmland Encyclopedia 经济学农用地定级释 classification on farmland农用地定级在中国地方行政区（省或区县级）内，对农用地的质量进行的划分。
随便看	positive definite matrix positive definiteness positive definite operator positive definite potential positive definite product positive definite quadratic form positive definite scalar product positive definite sequence positive definite solution positive definite space positive definite tensor positive definte rational fanction positive deviation positive diffeomorphism positive diffeomorphisms positive differential positive direction positive displacement compressor positive displacement flowmeter positive displacement motor drill positive displacement pump positive displacement sensor positive distinctiveness positive distribution positive divisor

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。