释义 |
〔pyrethrin〕Either of two viscous liquid esters, C21H 28O 3 or C 22H 28O 5, that are extracted from pyrethrum flowers and used as insecticides. 除虫菊酯:两种液体粘性酯中的任一种,C21H 28O 3或C 22H 28O 5,从红花除虫菊花上提取,用于杀死昆虫 〔pyrethroid〕Any of several synthetic compounds similar to pyrethrin, used as an insecticide.类除虫菊酯物:与除虫菊酯相似的一种合成的混合物,用于杀死昆虫的药剂〔allethrin〕A synthetic clear or amber-colored viscous insecticide, C19H 26O 3, similar to pyrethrin. 丙烯除虫菊酯:一种合成的透明或琥珀色粘性杀虫剂,C19H 26O 3,与除虫菊酯相似 |