“economic threshold”的概念、定义、翻译、参考文献-科学参考

单词	economic threshold
释义	economic threshold Encyclopedia 农学经济阈值释 economic threshold; ET经济阈值采用防治措施阻止害虫种群密度增长，以免达到经济损害允许水平的虫口密度。又称防治指标、防治阈限。
随便看	weight graph weight group weight homomorphism weight indicator weighting weighting coefficient weighting factor weighting filter weighting finishing weighting function weighting material weighting matrix weighting method weighting of observation weight-in-motion weight inspection of raw silk weight inverse matrix weight lattice weightless weightless aircraft weightlessness weightlessness induced bone loss weightlessness-induced muscle atrophy weightlessness physiological effect weightlessness physiological effects countermeasures

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