insecticidal materials

• 杀虫材料

insecticidal materials的用法和样例：

例句

1. The insecticidal action must be considered doubtful.
   这个杀虫作用是值得怀疑的。
2. The extracts of Xanthium sibiricum had insecticidal effect on armyworm.
   苍耳提取物对粘虫具有一定的杀虫效果。