单词 | 除虫菊 |
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 〔pyrethrum〕An insecticide made from the dried flower heads ofChrysanthemum cinerariifolium or C. coccineum. 除虫菊杀虫剂:由除虫菊 或 红花除虫菊 的干燥的花朵制成的杀虫药剂 〔pyrethrum〕Any of several Old World plants of the genusChrysanthemum, such as C. coccineum, cultivated for their showy flower heads. 菊花:一种东半球菊科 属植物,例如 红花除虫菊 ,因醒目的花朵而被种植 |
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