“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	Haenzel Haerbin-changchun urban agglomeration Haerbin's early-modern city planning in tsarist Russia period，1898～1926 Haerbin Shi Haerbin Xinqu Hafele Keating experiment Hafele-Keating experiment Hafen City Haffner effect Hafnia alvei infection hafnium hafnium alloy Hafnium isotope geochemistry hafnium metallurgy hafnocene Hafsid Dynasty Hag Hagedorn equation of state Hagedorn temperature Hagedorn温度 Hage Gottfried Geingob Hagenbach correction Hagen crater Hagen-Rubens relation Ha Geun-chan

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