“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	structure-preserving algorithm structure problem structure property structure property correlation structure-property correlation structure query language structure query language, SQL structure query language ？ structure refinement structure relaxation structure retrieval structure rheology structure risk structure semantics structure sensitive reaction structure series structure sheaf structure space structure space of a ring structure stability structure stiffness structure tensor structure theorem structure theory structure transport

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