英语释义

• white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below; source of an insecticide; sometimes placed in genus Chrysanthemum

• spring-flowering garden perennial of Asiatic origin having finely divided aromatic leaves and white to pink-purple flowers; source of an insecticide; sometimes placed in genus Chrysanthemum

• made of dried flower heads of pyrethrum plants

片语

pyrethrum Ointment翻译

Pyrethrum cinera除虫菊

Pyrethrum carneum除虫菊

pyrethrum dalmatian达尔马提亚除虫菊

dalmatian chrysanthemum除虫菊

Pyrethrum cineraefolium除虫菊

Pyrethrum Solution除虫菊酯

pyrethrum camphor除虫菊脑

florists pyrethrum红花除虫菊

Pyrethrum krylovianum黑苞匹菊

英汉例句

• 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。

• extracted pyrethrins from pyrethrum dried flower by super critical co2 .

  采用超临界co2萃取除虫菊中有效成分除虫菊酯。

• 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。

• 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。

• 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。

• 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。

• 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%。

• objective to observe the efficacy of natural pyrethrum mosquito coil against culex pipiens pallens by bioassay.

  目的通过生物测试，观察天然除虫菊素盘式蚊香对淡色库蚊的药效。

• this article draws up the pyrethrum ester insecticide.

  本品是拟除虫菊酯类杀虫剂。

• other crops have joan hemp, corn (maize), all kinds of beans, banana, cinnamomum bark, cotton, pyrethrum and potatoes.

  其他作物有琼麻、玉米（玉蜀黍）、各种豆类、香蕉、金合欢树皮、棉花、除虫菊和马铃薯。