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雾滴密度
相关语句
  droplets density
     Relationship Between the Efficacy of Wheat Aphids Control and the Omethoate Concentration, Droplets Density
     药液浓度、雾滴密度与氧乐果防治麦蚜的关系研究
短句来源
     The relationship between the efficacy of wheat aphids control and omethoate concentration and droplets density was very closed. Based on regression analysis, laboratory studies showed that LN 90 values were 336.1, 237.6, 208.8 and 115.3 cm -2 respectively, at the omethoate concentration of 1.0, 1.5, 2.0, 3.0 g·L -1 and droplets with 85 μm VMD.
     氧乐果药液浓度、雾滴密度与小麦蚜虫防治效果关系紧密 ,室内定量喷雾试验表明 :雾滴体积中径 (VMD)为 85μm,氧乐果药液浓度 1.0、1.5、2 .0、3.0 g· L-1条件下 ,蚜虫致死 90 %时雾滴覆盖密度 L N90 分别为 336 .1、2 37.6、2 0 8.8和 115.3cm-2 ;
短句来源
  “雾滴密度”译为未确定词的双语例句
     However,with a 3 WCD-5ULV-sprayer,the viability were not affected,and mean diameter ofdroplets was around 30μm. With 12 droplets/cm2 as the effective spraying density,effectivespray width could reach 7 m under wind speed of 3 m/s.
     而以3WCD-5型电动超低容量喷雾机配套使用时,孢子活力不受影响,喷出雾滴平均直径在30μm左右,若雾滴密度以12个/cm2为有效密度,在风速为3m/s下,有效喷幅可达7m。
短句来源
     The swath width was 40 m. The droplets size was 150~170 μm (volume median diameter),and the number of droplets per cm 2 was 9~16. The droplets ratio of diffusion was 0.77.All the results showed the properties of the HU2 HW1(ULV) when being equipped with the petrel 650B motor glider were excellent.
     有效喷幅40m,雾滴粒径95~170μm,雾滴密度平均9~16滴/cm2,雾滴均匀系数为0.77。 说明新研制的HU2-HW1型超低容量喷洒设备主要装置的性能良好。
短句来源
     A quick sdraying technique of lateral canopy surface treatment was thus designed for the caterpillar control.
     测定了5种杀虫剂不同剂量对茶毛虫及蜘蛛的影响和茶丛不同部位雾滴密度,建立了实施快速喷雾防治技术。
短句来源
     the density and amount of droplets decrease rapidly but the diameter decreases smoothly with the distance downwind increasing;
     雾滴密度和沉降量随下风距离增加而减小较快,雾滴直径减小较慢;
短句来源
     The experiments were carried out to determine the impact factors and spray distribution pattern of droplet diameter and density of a 9WZCD-25 air-blast sprayer.
     通过一系列正交试验,揭示了9WZCD25型风送式超低量喷雾机的雾滴直径和雾滴密度在喷幅方向上的变化规律及其影响因素。
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  相似匹配句对
     The line density and area density have been counted.
     区的密度
短句来源
     Density "Experiment
     密度的实验
短句来源
     Relationship Between the Efficacy of Wheat Aphids Control and the Omethoate Concentration, Droplets Density
     药液浓度、雾滴密度与氧乐果防治麦蚜的关系研究
短句来源
     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.
     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。
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Observations about the distribution habits of the tea caterpillar were conducted in Nangzheng County of Shaanxi Province. The results showed that the larvae before 4th instar distributed regularly on the under surface of the leaves in the middle and lower part of the bilateral tea rows, and the vertical and horizontal movements of the larvae keep relatively stable within the mentioned area within about 20 days. A quick sdraying technique of lateral canopy surface treatment was thus designed for the caterpillar...

Observations about the distribution habits of the tea caterpillar were conducted in Nangzheng County of Shaanxi Province. The results showed that the larvae before 4th instar distributed regularly on the under surface of the leaves in the middle and lower part of the bilateral tea rows, and the vertical and horizontal movements of the larvae keep relatively stable within the mentioned area within about 20 days. A quick sdraying technique of lateral canopy surface treatment was thus designed for the caterpillar control. The spray cloud was introduced directly onto the limited mentioned area, instead of. the conventional whole plant spray. Application rates and deposition densities of spray droplets of 5 insecticides used were determined and the control efficacies reported. Only one fourth of the conventional application dosage of pesticide was enough for control by the application techniques here described, and the pesticide-contamination of bud-tea could be decreased obviously.

在茶毛虫(Euproctis pseudocospersa Strand)生态学研究中,观察到阶梯形茶园中的茶毛虫四龄前幼虫有规律地分布在茶丛两侧中下部叶片背面。在近20多天内,其垂直和水平活动范围相对稳定。以茶毛虫侧向分布规律为依据,设计了茶毛虫低位侧向快速喷药防治技术,改进了过去全丛喷雾为两侧中下部快速喷雾,并根据茶丛高度及幼虫龄期调节步速和喷幅,以提高防治效果。测定了5种杀虫剂不同剂量对茶毛虫及蜘蛛的影响和茶丛不同部位雾滴密度,建立了实施快速喷雾防治技术。可减少用药量约3/4;降低茶蓬面芽叶受药量;与常规方法防治效果相当,而工效提高约3倍。经3年小区试验和大面积推广示范,证明较经济有效,适于山区茶园应用。

The comparison study of atomizing performance of four types of cold and thermal fog sprayers had been done in laboratory.The results showed:(1)The thermal fog sprayer3Y-1 and untralow volume sprayer-WS-1 with even aerosol droplets are well atomizing machines.(2)NMD VMD and depesit density of droplet declined along with the increase of spraying distance.The droplets sprayed out by well atomizing sprayers fall down slower than by poor atomizing sprayers.The droplets sprayed out by sprayers with air-pump drop down...

The comparison study of atomizing performance of four types of cold and thermal fog sprayers had been done in laboratory.The results showed:(1)The thermal fog sprayer3Y-1 and untralow volume sprayer-WS-1 with even aerosol droplets are well atomizing machines.(2)NMD VMD and depesit density of droplet declined along with the increase of spraying distance.The droplets sprayed out by well atomizing sprayers fall down slower than by poor atomizing sprayers.The droplets sprayed out by sprayers with air-pump drop down slower than by those without air-pump,and the depesit density of droplet was well-distributed.(3)The penetration through the mosquito cages between cold aerosol and thermal fog is different(P<0.05).The thermal fog can penetrate the cages easier than cold aerosol.So that it is available for using in denoely wooded areas.

本文对4种冷、热雾杀虫器械的雾化性能进行了室内比较研究。结果发现:(1)热雾机型3Y—1型,转笼式超低容量喷雾器WS—1型,雾化性能较好,雾滴均勻,为较好机种。(2)雾滴NMD、VMD,雾滴密度随喷雾距离增加逐渐降低,雾化均匀的机种降低较慢,雾化不均匀的机种降低较快,有离心风力的机型降低较慢,旦各距离密度较均匀,反之则否。(3)冷、热雾雾滴对蚊笼穿透力不同(P<0.01),热雾对蚊笼穿透力较强,推测其在郁闭程度高的地点使用是有利的。

The drift of droplets in spraying diluted 2,4-D butyl ester emulsion by Yun-5 aircraft mounted the GP-81 nozzle has been studied,and a mathematical model has also been set up in this paper. As results,the droplet drift distance is 340 meters for the water with the smaller volatility,and 700 meters for the 2,4-D butyl ester with the greater volatility ; the density and amount of droplets decrease rapidly but the diameter decreases smoothly with the distance downwind increasing;the weather conditions and spray...

The drift of droplets in spraying diluted 2,4-D butyl ester emulsion by Yun-5 aircraft mounted the GP-81 nozzle has been studied,and a mathematical model has also been set up in this paper. As results,the droplet drift distance is 340 meters for the water with the smaller volatility,and 700 meters for the 2,4-D butyl ester with the greater volatility ; the density and amount of droplets decrease rapidly but the diameter decreases smoothly with the distance downwind increasing;the weather conditions and spray liquid fomulations influence greatly the drift;the equation Y=b0+b1X+b2X2+b3X3 describles the relation between the droplet drift and the distance downwind well,and the coefficients in the model have a clear practical meaning. This paper also advances an effective buffer zone width in 2,4-D butyl ester aerial application.

通过田间试验研究,探索了装配GP—81喷头的运五型飞机喷洒2,4—D丁酯乳油稀释液的雾滴漂移状况,建立了有关数学模型。研究表明,较低蒸发度的水雾滴漂移距离为340m,较高挥发度的2,4—D丁酯漂移距离达700m;雾滴密度和沉降量随下风距离增加而减小较快,雾滴直径减小较慢;气象因子和喷液配方对雾滴漂移有重要影响;三次多项式方程Y=b_0+b_1X+b_2X~2+b_3X~3能很好地描述雾滴漂移与下风距离的关系,模型中的参数具有明确的实际意义,提出了喷洒2,4—D丁酯时的有效隔离带宽度。

 
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