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Objective:To know the killing effect of pyrethroid preparation against cockroach;
目的：了解拟除虫菊酯类制剂杀灭蟑螂的效果；
youdao
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Objective:To study a new bait formulation for killing cockroach.
目的：对研制的一种新灭蜚蠊毒饵配方进行毒效观察。
youdao
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Objective:To study a new bait formulation for killing cockroach.
目的：对研制的一种新灭蜚蠊毒饵配方进行毒效观察。
youdao