“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	reaction bonding reaction bonding; reaction adhesion reaction calorimeter reaction calorimetry reaction centre reaction chain reaction channel reaction chromatography reaction classes reaction coefficient reaction coil reaction control system reaction coordinate reaction coordinates reaction, counteraction reaction cross section reaction cross-section reaction degree reaction diffusion equation reaction-diffusion equation reaction diffusion system reaction during qigong practice reaction energy reaction enthalpy reaction factor of fluid machinery

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