“土壤养分分级”的概念、定义、翻译、参考文献-科学参考

单词	土壤养分分级
释义	土壤养分分级 Encyclopedia 农学土壤养分分级释 soil nutrient grading土壤养分分级按照土壤养分贮量高低划分土壤养分等级的过程。
随便看	negative real number negative recurrent state negative refraction negative refraction index materials negative-refraction-index materials negative refractive index negative regression negative reinforcement negative relation negative resistance negative resistance amplifier negative-resistance device negative-resistance oscillator negative response negative result negative root negative rotation negative selection negative semi-definite negative semi-definite form negative semi-definite kernel negative semi definite matrix negative semi-definite matrix negative semi-definite operator negative semi definite quadratic form

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。