contact insecticide meaning in Chinese

触杀杀虫药
接触（型）杀虫剂
接触杀虫剂；触杀剂
接触性杀虫剂
昆虫触杀剂

Organophosphates are broad - spectrum contact insecticides with relatively higher toxicity and longer residual activities
有机磷是广谱触杀性除害剂，毒性相对高，效力较持久。
These chemicals are broad - spectrum contact insecticides that provide rapid knockdown effects on insects but with only little residual activity
这些化学品是广谱触杀性除害剂，具快速触杀作用，但残留效力并不持久。