“脲类除草剂”的概念、定义、翻译、参考文献-科学参考

单词	脲类除草剂
释义	脲类除草剂 Encyclopedia 农学脲类除草剂释 urea herbicide脲类除草剂一类光合作用光系统PS Ⅱ电子传递抑制剂或细胞分裂抑制剂。结构式中R1一般为取代苯环或五六元杂环及稠合环，脂肪链组成的桥连环也可以，但以取代苯环居多；R2大多为氢；R3一般为短链的脂肪烷烃；R4一般为氢、短链的脂肪烃或烷氧基。
随便看	preset aperture ring preset diaphragm presetting presheaf presheaf of abelian groups presheaf of groups presheaf of sets presheaf structure preshoot preshot pre-shrinking preshrunk Presidential-Libraries Presidential Records Act president of the People's Republic of China president-responsibility system under the leadership of Chinese Communist Party Committee Presidents Cup presidium of the National People's Congress presious metal nanomaterials pre-slotted liner presoak presoaking presolar grains presolar matter presolar nebula

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。