“selection of superior stand”的概念、定义、翻译、参考文献-科学参考

单词	selection of superior stand
释义	selection of superior stand Encyclopedia 农学母树林释 selection of superior stand优良林分选择在天然林或人工林分中，依据实际情况比较各林分的优劣，将符合优良标准的林分筛选出来进行利用的群体选择工作。
随便看	safety operation of crane safety operation regulation safety paper safety pedagogy safety performance safety performance evaluation safety period of fertility alteration safety pharmacology safety physiology safety pillar safety pre-evaluation safety production cost safety production incentive mechanism safety production index safety production insurance safety production liability insurance safety production license system safety production of hydropower station safety production qualification certification training safety production responsibility system safety production rules and regulations safety production strategy safety product validation safety profit safety protection

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。