“available nitrogen”的概念、定义、翻译、参考文献-科学参考

单词	available nitrogen
释义	available nitrogen Encyclopedia 农学速效氮释 available nitrogen有效氮反映近期内土壤氮素供应状况的参数。
随便看	sample size Sample size estimation sample skewness sample space sample space ordering sample space ranking sample-specific nature sample, specimen sample-splitter sample splitting sample spotter sample spotter; spot applicator sample stacking sample-standard bracketing sample standard deviation sample statistic sample survey sample tape sample testing sample theory sample thief sample time sample trajectory sample unit sample-unit weight

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。