pyrethrum

双语例句

1. Feverfew and pyrethrum are used in insecticides.
小白菊和红花除虫菊可用来制杀虫剂。

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2. To evaluate the immune toxicity of natural pyrethrum.
目的检测天然除虫菊酯的免疫毒性。

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3. This article draws up the pyrethrum ester insecticide.
本品是拟除虫菊酯类杀虫剂。

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4. The output of some export crops, notably cashews, cotton, and pyrethrum, fell drastically.
有几种出口农作物，特别是腰果、棉花和除虫菊的产量大幅度下降。

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5. The paper introduced the principle , the test conditions and the operation steps of drying the pyrethrum flower ;
本文主要介绍了除虫菊鲜花的真空冷冻干燥技术的原理、条件和操作步骤。

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6. Pyrethrum impregnated bed nets were effective for control of malaria and it is an important measure for management of floating population.
用除虫菊酯浸泡蚊帐防治疟疾及传疟媒介获得良好效果，可作处理流动人口疟疾疫点的重要措施。

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7. The pyrethrins are mainly synthesized in pyrethrum flowers and the content is more than 95%. The content in the dried flowers is about 1.2-2.0%.
除虫菊素主要在除虫菊花中合成，其含量占整个植株的95%以上，而干花中除虫菊素含量在1.2 - 2.0%。

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8. Improving the content of pyrethrins in pyrethrum through genetic engineering technology is restricted, for little is known about pyrethrins-related genes.
但国内外对于天然除虫菊素合成相关基因的研究很少，从而制约了利用基因工程技术提高除虫菊花中除虫菊素的含量。

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9. Pyrethrum possesses some ideal characteristics of environmental compatible chemical pesticide, however its photo lability and expensive price limit its broad use in the field.
天然除虫菊酯虽然具有理想化学农药的一些特性，但光不稳定性和昂贵的价格限制其大面积使用。

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10. Extracted pyrethrins from pyrethrum dried flower by super critical CO2 . is a paste called oleoresin which isn't suitable to formulate insecticidal products either use in household or crops.
用超临界CO2从除虫菊干花中萃取的除虫菊素，这种膏状物不能直接用来加工或深加工杀虫产品。

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11. Extracted pyrethrins from pyrethrum dried flower by super critical CO2 . is a paste called oleoresin which isn't suitable to formulate insecticidal products either use in household or crops.
用超临界CO2从除虫菊干花中萃取的除虫菊素，这种膏状物不能直接用来加工或深加工杀虫产品。

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