毒杀芬为有机氯杀虫剂的一种，残效期长。
Toxaphene, an organic chloride insecticide possesses a long residual period.
有机肥应首先施于小麦使玉米利用养分残效。
Organic manure should be first applied to wheat to let maize use the residual nutrients.
利用田间试验方法研究保护剂长残效除草剂解毒效应。
This paper presented the research on detoxification with antidote to long residual herbicides in greenhouse and field test.
树大夫树干注药，残效期长，无污染，对天敌安全，果实无残留，可在生产中推广使用。
Trunk inoculation of Shudaifu was long lasting, pollution free, safe to natural enemies and no pesticide residue in fruits. It could be popularized in the production.
灭幼脲以其独特的杀虫方式，及其广谱、高效、低毒、低成本、残效期长等优点，被誉为“绿色农药”。
DFB is called "green pesticide" with the characters:individual mode of action, broad spectrum, high performance, hypovirulence, low cost, long residual efficient duration.
他颇具说服力的指出，通过设立摧残效率的关税壁垒来保护本国产业远逊于直接帮助那些为混乱的变革所困扰的工人。
He argues, persuasively, that it is far better to help workers affected by disruptive change than it is to shield industries with efficiency-destroying tariffs.
他颇具说服力的指出，通过设立摧残效率的关税壁垒来保护本国产业远逊于直接帮助那些为混乱的变革所困扰的工人。
He argues, persuasively, that it is far better to help workers affected by disruptive change than it is to shield industries with efficiency-destroying tariffs.
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