Objective to study the effective duration of niclosamide and influencing factors in water and soil.
目的研究氯硝柳胺在水体及土壤中的持效时间及其影响因素。
According to the authors, antibiotics "should be prescribed for pregnant women only for appropriate indications and for the shortest effective duration."
作者认为，抗生素“应该是开具给有适当适应症的怀孕妇女，并给以最短的有效疗程。”
Results The cypermethrin preparation could control pests for 2 months, but the effective duration of cypermethrin confected by chitosan was more than 3 months.
结果单纯氯氰菊酯制剂的持效时间为2个月左右，壳聚糖复配的氯氰菊酯制剂的持效时间至少为3个月。
Results The cypermethrin preparation could control pests for 2 months, but the effective duration of cypermethrin confected by chitosan was more than 3 months.
结果单纯氯氰菊酯制剂的持效时间为2个月左右，壳聚糖复配的氯氰菊酯制剂的持效时间至少为3个月。
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