“exotic weeds”的概念、定义、翻译、参考文献-科学参考

单词	exotic weeds
释义	exotic weeds 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	universal class of structures universal closure universal code universal coding universal coefficient universal coefficient formula universal coefficient theorem universal complexification universal compressibility factor graphs universal computer universal conductance fluctuation universal conductance fluctuations universal conductance fluctuation, UCF universal cone universal constant universal construction Universal Copyright Convention universal coupling constant universal coupling with spider universal cover universal covering universal covering group universal covering manifold universal covering space universal covering surface

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