专业释义英英释义
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除虫菊素
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除虫菊酯类 - 引用次数：4
OBJECTIVE: Pyrethrins is a new type pesticide that had developed rapidly in 1870s. It was refined from the plant at first.
目的拟除虫菊酯类农药是70年代迅速发展起来的新型农药，最初是在除虫菊这种植物中提取出来的。
参考来源 - Ⅱ -
除虫菊素
·2,447,543篇论文数据，部分数据来源于NoteExpress
柯林斯英汉双解大词典
pyrethrin /paɪˈriːθrɪn/
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1.
N an oily water-insoluble compound used as an insecticide. Formula: C21H28O3 除虫菊酯 (Also called pyrethrin I)
双语例句权威例句
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The invention provides natural pyrethrins pollen and the preparation method thereof.
本发明为天然除虫菊素花粉剂及制备方法。
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Objective To observe the efficacy of pyrethrins aerosol against cockroaches by bioassay.
目的通过生物测试，观察天然除虫菊素杀虫气雾剂对蟑螂的药效。
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Nearly 90% of exposures involved insecticides containing pyrethroids, pyrethrins or both.
将近90%的杀虫剂都含有除虫菊酯或者虫菊酯或者兼而有之。
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