“病虫害非疫区”的概念、定义、翻译、参考文献-科学参考

单词	病虫害非疫区
释义	病虫害非疫区 Encyclopedia 管理学实施卫生与植物卫生措施协定释 pest- or disease- free areas病虫害非疫区没有发生检疫性病虫害，并经所在国主管机关确认的地区，可以是一个国家的全部或部分地区，也可以是几个国家的全部或部分地区。
随便看	principal component regression method (PCR) principal component regression spectrophotometry principal components principal components analysis principal component transformation principal computable enumeration principal congruence principal congruence relation principal congruence subgroup principal conjecture principal conjunctive normal form principal connex principal convergent principal coordinates of neighbour matrics principal crossed homomorphism principal curvature principal curve principal curves principal deformation principal determinant principal diagonal principal diameter principal dielectric axes principal direction principal direction of curvature

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。