pyrethrum

pyrethrum 基本解释

n.  除虫菊(尤见于肯尼亚); 除虫菊杀虫剂

pyrethrum 词性变化

复数：pyrethrums

pyrethrum 词组短语

• Anacyclus pyrethrum DC
• German Pyrethrum
• Pyrethrum carneum
• Pyrethrum cinerariaefolium Bocc.
• Pyrethrum Dalmatian
• Pyrethrum flower
• Pyrethrum L.
• pyrethrum Ointment
• Pyrethrum Persian
• pyrethrum root

pyrethrum 详细解释

noun

1. 除虫菊（尤见于肯尼亚）
   a type of flower grown especially in Kenya
2. 除虫菊杀虫剂
   a substance made from this flower and used for killing insects

pyrethrum 双语例句

1. 1、 Studies on tissue culture and chromosome identification technology of pyrethrum cinerariae Folium trev.
   白花除虫菊组织培养研究。
2. 2、 Made of dried flower heads of pyrethrum plants.
   用除虫菊植物的干花头制成。
3. 3、 Induction, preservation and differentiation of calli of pyrethrum cinerariifolium trev.
   除虫菊愈伤组织的诱导和继代。
4. 4、 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。
5. 5、 The Shaoxing yellow wine organic phosphorus remains, the pyrethrum remains had not picked out.
   绍兴黄酒有机磷残留，菊酯类残留均未检出。
6. 6、 Study on Residual Dynamics of Some pyrethrum in Orchard Soil
   几种菊酯农药在果园土壤中的残留动态研究
7. 7、 An insecticide derived from a plant, e.g. pyrethrum ( from Chrysanthemum flowers).
   3来源于植物的杀虫剂，例如除虫菊（来源于菊花）。
8. 8、 Yesterday, today and tomorrow of pyrethrum industry in China
   中国天然除虫菊酯农药产业的过去、现在和将来
9. 9、 The Synthesis of Pesticide on Non Imitative pyrethrum Ester; Synthesis and Mesophase Behavior of Some Esters Containing Steroid Nucleus
   不含菊酸类拟除虫菊酯化合物的合成甾核基酯类化合物的合成与液晶性能
10. 10、 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。
11. 11、 Yotech export grade used for intermediate of Agrcultural pesticides, pyrethrum pesticide.
    永达出口标准农药杀虫剂菊酯中间体。
12. 12、 This article draws up the pyrethrum ester insecticide.
    本品是拟除虫菊酯类杀虫剂。
13. 13、 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。
14. 14、 Study on Microwave Extraction of pyrethrum
    微波萃取除虫菊的研究
15. 15、 Pyrethroid insecticides are developed from lead compounds that are the effective components extracted from natural pyrethrum flowers.
    拟除虫菊酯类农药是根据天然除虫菊花中提取的杀虫组份经结构改造而发展起来的一类重要的合成杀虫剂。
16. 16、 The Use of the Vacum Drying in the Drying of pyrethrum Flower
    真空冻干技术在除虫菊鲜花干燥中的应用研究
17. 17、 GC-MS Analysis of the Chemical Constituents of Natural pyrethrum Extracted by Supercritical CO_2
    超临界CO2萃取天然除虫菊化学成分的GC-MS分析
18. 18、 The paper introduced the principle, the test conditions and the operation steps of dry-ing 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。
19. 19、 [ Conclusion] The three months administration showed that natural pyrethrum has no immune toxicity in rats.
    结论天然除虫菊酯经口染毒3个月，未观察到明显的免疫毒性效应。
20. 20、 This paper reviews research pertaining to natural insecticidal pyrethrum, including the active ingredient in the pyrethrum flower, manufacture, formulation, toxicity, and research on control of agriculturally important insect pests.
    综述了天然除虫菊的相关研究，包括除虫菊花的杀虫活性成分、制剂与加工、毒性及在农业害虫防治方面的研究。
21. 21、 Efficacy of natural pyrethrum mosquito coil against Culex pipiens pallens
    天然除虫菊素盘式蚊香对淡色库蚊的药效实验研究
22. 22、 There is no effects with pyrethrum dregs 6g/ per chook.
    用除虫菊花粉渣治疗，每只鸡60g仍不显效果；
23. 23、 GC-MS was used to analyse pyrethrum extracted by supercritical CO_2.Area normalization was used to determine relative percentage content of the compounds.
    采用GC-MS法对超临界CO2萃取天然除虫菊的化学成分进行了分析，用归一化法测定了各组分的相对百分含量。
24. 24、 Comparative Studies on the Development of pyrethrum Flower Head Before and After Introduction
    引种前后除虫菊花头生长发育的比较研究
25. 25、 Three Methods for pyrethrum Cell Suspension Culture
    除虫菊细胞悬浮培养3种方法的比较
26. 26、 Different effects were made by different treatments of concentration chemicals on physiological characteristics of pyrethrum leaves under high temperature stress.
    不同浓度药剂处理对高温胁迫下除虫菊叶片生理特性的影响不同。
27. 27、 Screened on genotype, hormones and other conditions, we established an efficient regeneration pyrethrum system and studied on planta transformation of different conditions.
    通过对基因型、激素种类等条件的比较研究，建立了除虫菊的稳定高效再生体系，并对除虫菊原位转化的一些条件进行了初探。
28. 28、 Thus, pyrethrum genotype was one of the most important factors for the regeneration.
    因此，除虫菊基因型是影响其叶片再生的重要因素之一。
29. 29、 pyrethrum enjoys cold climate so that it industrialized with extensive adaptability and planting scale in Yunnan in China.
    除虫菊性喜冷凉气候，在我国云南有广泛的适应性和产业化种植规模。

pyrethrum 英英释义

noun

1. spring-flowering garden perennial of Asiatic origin having finely divided aromatic leaves and white to pink-purple flowers

   Synonym:    painted daisyTanacetum coccineumChrysanthemum coccineum

2. white-flowered pyrethrum of Balkan area whose pinnate leaves are white and silky-hairy below

   Synonym:    Dalmatian pyrethrumDalmatia pyrethrumTanacetum cinerariifoliumChrysanthemum cinerariifolium

3. made of dried flower heads of pyrethrum plants