“population density of pest”的概念、定义、翻译、参考文献-科学参考

单词	population density of pest
释义	population density of pest Encyclopedia 农学虫口密度释 population density of pest虫口密度一定时间和空间单位上某一种昆虫种群的绝对数量或相对数量。又称害虫种群密度。
随便看	effective problem effective procedure effective process effective properties of composites effective property Effective Public Relations effective pulse width effective radiation effective radius effective radius of gas pressure regulator station effective range effective rate of protection effective reading distance effective receiving area effective reflecting area effective refractive index effective refractory period effective resource usage management effective scattering cross section effective scattering cross-section effective scattering layer effective search width effective set effective soil fertility effective source rock

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。