“外来杂草”的概念、定义、翻译、参考文献-科学参考

单词	外来杂草
释义	外来杂草 Encyclopedia 农学〔地理起源分类〕释 exotic weeds外来杂草由人为因素有意或无意被引入到新生态环境，能在其中自然延续种群，并对新生态环境或其中的物种构成一定威胁的草本植物。
随便看	helmet streamer helm graph Helmholtz helmholtz Helmholtz Association of German Research Centres Helmholtz capacitor model Helmholtz Center for Materials and Energy Helmholtz Centre for Heavy Ion Research Helmholtz Centre for Ocean Research Helmholtz coil Helmholtz coils Helmholtz contraction Helmholtz contraction time Helmholtz crater Helmholtz decomposition Helmholtz differential equation Helmholtz double layer Helmholtz equation Helmholtz formula Helmholtz free energy Helmholtz function Helmholtz, Hermann Ludwig Ferdinand von Helmholtz-Kelvin contraction Helmholtz-Kelvin theory helmholtz-kelvin time scale

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。