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preemergent

adj. 出土前的；出土前施用的

1、萌前除莠剂

... preemergencetreatment 苗前处理 preemergent 萌前除莠剂 preemergentherbicides 在萌发前施用的除草剂 ...

preemergent herbicides除草剂;在萌发前施用的除草剂

preemergent eruption出龈前萌长

preemergent weed control作物苗前杂草防治

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