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the demonstration experiment
相关语句
  演示实验
     In the demonstration experiment system which based on VRML,MATLAB,Simulink,VR Toolbox and VR Editor are combined perfectly,the controlling model of dynamic demonstration experiment is created and the simulation dynamic control is realized.
     基于VRML技术的演示实验系统中,将MATLAB、Simulink、VR工具箱及VR编辑器有机地进行了结合,建立了动态演示实验的控制模型,实现了演示实验的仿真动态控制.
短句来源
     Attempt of Teaching Reforms in the Demonstration Experiment About Chemistry of Middle School
     中学化学演示实验教学改革的尝试
短句来源
     THE DEMONSTRATION EXPERIMENT OF STANDING WAVES IN A STRING
     谈弦上驻波演示实验
短句来源
     Discussion on the demonstration experiment of capacity of parallel plate capacitor
     “平行板电容器的电容”演示实验探讨
短句来源
     COMPUTER ADC INTERFACE AND APPLICATION IN THE DEMONSTRATION EXPERIMENT
     计算机接口在物理演示实验中的应用
短句来源
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  “the demonstration experiment”译为未确定词的双语例句
     In the Demonstration Experiment,the mean root yield was 83.6t/ha and increased by 25.7% in comparison with the CK variety.
     在生产试验中,平均根产达83.6t/hm2,超过对照种25.7%。
短句来源
     The demonstration experiment of chemical weeding in large area has been finished and the new system of weeds ecology and chemical regulation has been established.
     大垅窄行密植对阔叶杂草抑制较明显。 同时进行了大面积化学除草示范,形成杂草生态及化学调控的新体系。
短句来源
     Extension of the demonstration experiment with Franklin wheel
     富兰克林轮演示实验的扩展
短句来源
     Developing the Demonstration Experiment of Chlorine
     氯气演示实验的改进
短句来源
     Study on the Demonstration Experiment in chemistry teaching
     对化学教学中演示实验的探讨
短句来源
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  相似匹配句对
     The second is demonstration.
     第二是实证分析研究;
短句来源
     The Demonstration on Nian
     “粘”的论证
短句来源
     demonstration and explanation;
     2.示范与讲解教学法;
短句来源
     Lenz law demonstration
     楞次定律演示实验设计
短句来源
     THE DEMONSTRATION OF FRANCK-HERTZ EXPERIMENT
     弗兰克-赫兹实验的演示
短句来源
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  the demonstration experiment
The demonstration experiment has been proved useful in elementary thermodynamic courses for introducing the entropy concept.
      


This gas generator is designed according to the principle of Kipp generator. It has the following advantages besides all the characteristics possessed by Kipp generator:1. Simple construction,2. Good air seal,3. Good safety property,4. Easy operation,5. Less chemical consumption.6. Good heat-resistance.It is applicable to the demonstration experiment and the group experiment.

本文根据启普发生器原理而设计的微型气体发生器,除了具备启普发生器所有的特点外,还具备下列优点:1.结构简单;2.气密性好;3.安全性高;4.使用方便;5.节约药品;6.可以加热.适于演示实验和分组实验用.

The space distribution of pesticide in tea garden is influenced by thediameter and density of the droplet as well as by the percentage of pesti-cide deposit.The droplet from the low-volume spraying is relatively small,and the percentage of hits to the target-pests situated on the 0—10cmsurface of tea canopy can be as high as 60—70%,10—17% higher than thatfrom the normal-volume spraying which produces larger droplet.However,the percentage of the hits from the normal-volume spraying on the middleand lower parts...

The space distribution of pesticide in tea garden is influenced by thediameter and density of the droplet as well as by the percentage of pesti-cide deposit.The droplet from the low-volume spraying is relatively small,and the percentage of hits to the target-pests situated on the 0—10cmsurface of tea canopy can be as high as 60—70%,10—17% higher than thatfrom the normal-volume spraying which produces larger droplet.However,the percentage of the hits from the normal-volume spraying on the middleand lower parts of tea canopy as well as on the soil surface is higher thanthat from the low-volume spraying.The chemical degradative rate and thehalf-life of the pesticide sprayed on the tea plant with various sprayingtechniques are similar.However,the initial deposit is different,i.e.thedeposit from the low-volume spraying is higher than that from the normal-volume spraying under the condition of half-dosage application.The safetyinterval in the low-volume spraying treatment is similar to that in thetreatment of full-dosage with normal-volume spraying.Results of experi-ment showed that the mortality of target-pest is closely related to thenumber of droplet and the deposit amounts of pesticide per unit leaf area.The difference on the efficacy to the pests on the canopy of tea plant isinsignificant among the different spraying techniques.But it is quiteobvious different on the efficacy to those pests situated in the inner partof tea canoly.However,this low efficacy can be increased through impro-ving the spraying technique.An optimizing technical scheme on the pesticideapplication in tea garden was put forward.A significant economic efficiencyhas been obtained from the demonstration experiment in a large scale.

雾滴直径、密度和沉积率直接影响着农药在茶园空间的分布。采用机动弥雾、手动吹雾和小喷孔片等低容量喷雾与常规喷雾(常量法)进行比较试验,结果表明,前者对分布在茶树冠面0—10cm的芽叶害虫的农药中靶率高达60%—79%,较后者高10%—17%,但在茶树中下部的农药沉积率则反之(小喷孔片除外),农药在土壤中的流失量,常量法明显高于低容量喷雾。不同喷雾技术农药在茶树上的化学降解速率和半衰期相近,主要差异在于原始附着量的高低,其高低次序为机动弥雾>手动吹雾>小喷孔片>常量喷雾。农药的安全间隔期和对芽叶害虫的防治效果,低容量喷雾的半剂量处理与常量喷雾的全剂量处理相近。单位面积的农药沉积量及雾滴数与害虫的死亡率呈明显的正相关。各种喷雾技术在树冠面的农药沉积量均已超过害虫的致死量,故在芽叶害虫的防效上无明显差异。重点在于通过改进喷雾技术,以提高低容量喷雾对丛内病虫的防效。在研究的基础上,提出了适用于不同类型、地形、集约化程度及不同分布部位病虫的茶园农药优化使用技术方案,按此方案喷药,可获得显著的经济效益及社会效益。

A new kind of fungicides—Zhiweiling was compounded from Carbendazim adding salicylic acid and acetic acid in which the function of the two latter chemicals was to adjust the partition coefficient of carbendazim between oil and water in order to increase the penetration rate of this new fungicide to cotton hydrophilic parts—roots and stem. Zhiweiling has obvious high, rapid, persistent effect to control cotton wilt (Fusarium oxysporium f. sp vasinfactum) and also promoting effect on plant growth besides the same...

A new kind of fungicides—Zhiweiling was compounded from Carbendazim adding salicylic acid and acetic acid in which the function of the two latter chemicals was to adjust the partition coefficient of carbendazim between oil and water in order to increase the penetration rate of this new fungicide to cotton hydrophilic parts—roots and stem. Zhiweiling has obvious high, rapid, persistent effect to control cotton wilt (Fusarium oxysporium f. sp vasinfactum) and also promoting effect on plant growth besides the same wide spectrum of toxicity to viarioas fungi as carbendazim. The toxicity to cotton wilt fungus of Zhiweiling was 16.5 times higher than that of carbendazim. The controlling effect of Zhiweiling on cotton writ when applied through soil was 81.3 per(?)cent. while that of carbendazim, as a standard pesticide, was 56.1 percent, and could he seen immediately after 10 days of application and even kept for 80 days. The demonstration experiments in 42 sites among Huhei, Jiangsu, Anhui, Zhejiang, Hehei and Shandong provinces sponsored by the National Plant Protection Station in 1989-1991 showed good controlling effect on many diseases with 76.96%-96.90% to cotton wilt and 68.97%-95.64% to Gibberella zeae.

以多菌灵为主体,以调整其油水分配系数为目的,添加水杨酸、冰醋酸等助剂复混而成的新型杀菌剂治萎灵,除了具有原多菌灵的广谱杀菌特性外,还具有速效、高效、长效和促进生长的特点。对棉花枯萎病菌的毒力是多菌灵的16.5倍,施药后10天即可见效,治疗效果为82.3%(对照多菌灵的治疗效果为56.2%),有效控制期可达60-80天。

 
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