基本解釋脫葉劑同根派生 Defoliants相關詞英漢例句(2) by spraying defoliant to control second instar larva, all the defoliants with 3 different concentrations could control the insects indirectly, and the effectiveness was as high as 95%; 通過施用脫葉劑處理葉片的方法來防治2齡若蟲，試驗所設3種濃度的脫葉劑均能間接起到防治作用，其效果均達到了95%25以上。Defoliants更多例句