查询词典 pyrethrum insecticide

In larger doses, nicotine is a highly toxic poison, used as an insecticide, fumigant, and vermifuge.

大剂量的尼古丁有剧毒，用作杀虫剂、熏蒸剂和驱虫药。

In larger dose s, nicotine is a highly toxic poison, used as an insecticide, fumigant, and vermifuge.

大剂量的尼古丁有剧毒，用作杀虫剂、熏蒸剂和驱虫药。

As preventive, spray plants with systemic insecticide or fumigate them regularly

作为预防措施，要用内吸杀虫剂对植物定期喷洒，或熏蒸。

Company has its own authority of import and export,its product range includes germicide、 insecticide、 weedicide and intermediate.

公司拥有自营进出口权，主要生产杀虫剂、杀菌剂、除草剂和光气中间体四大系列产品。

The exploitation and research situation of Mexican Sunflower were reviewed from three aspects : utilization and research of medicine , insecticide and weedicide , green manure and fodder .

从药物的利用与研究，杀虫剂和除草剂的研究，肥料和饲料的利用与研究三个面综述目前国内外对肿柄菊的开发利用与研究现状。

Widely developing biology prevention and cure, using the gypsy moth NPV control the larva of gypsy moth, it's effect can reach above 70%, and it can easily form epidemic, then it will have the effect of long period's controlling; using Bt control the gypsy moth, it's effect can reach above 80%; using the gypsy moth Grplure can also gain certain effect; firstly using self-produced plant insecticide control the gypsy moth, it's controlling effect of origin liquid can reach 82.3%, and has widely using foreground.

广泛开展生物防治，利用舞毒蛾NPV防治舞毒蛾幼虫，防治效果达70％以上，且易形成流行病，可起到长期控制的作用；利用Bt防治舞毒蛾效果在80％以上；利用舞毒蛾性引诱剂也能收到一定的效果；首次应用自制的植物性杀虫剂防治舞毒蛾，应用原液防治效果达82.3％，有广阔的应用前景。

The insecticide included the mixed liquid of isofenphos-methyl and phoxim,inartificial nematocida and fenamiphos of different concentrations.

药剂处理使用了甲基异硫磷加辛硫磷混合液、天然杀线剂和克线磷，各药剂分别使用不同浓度进行处理。

The Company is a professional environmental health insecticide research and development, production, sales and service for the integrated enterprise.

本公司是集专业环境卫生杀虫剂的研发、生产、销售、服务为一体的综合性企业。

I have sprayed an insecticide, but that is only a temporary remedy.

我有一个喷杀虫剂，但是这只是一个临时的补救措施。

I went to the supermarket to buy some insecticide.

我去超级市场买一些杀虫剂。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。