In order to establish the technical foundation of controlling locusts in the large area , 20 % metarhizium anisopliae oil was contrasted with the normal insecticide , malathion oil by spraying fog by airplane 摘要采用飞机喷雾的方法，比较了20 %杀蝗绿僵菌油剂与常规杀虫剂马拉硫磷乳油在大面积生物治蝗方面的防治效果。
Based on the working requirement for spraying robot to complete field spraying task automatically totally , we successfully developed a set of single - chip measuring and controlling system for the spraying robot 根据喷雾机器人在田间完成全自动喷雾的作业要求，以单片机控制技术、传感器技术及电机调速技术为核心，成功研制出了喷雾机器人的单片机测控系统。
Moreover , the secondary wall - impingement distance should be properly reduced in order that the bump play a part in the formation of lean mixture with the increase of environmental pressure or density owing to both the increase of air entrainment , momentum losses and the decrease of the spray tip velocity and penetration 而且当压力或密度较高时，由于喷雾的空气卷吸量及动量损失增大，贯穿速度降低及贯穿距减小，为使bump发挥作用，应适当减小二次撞壁距离。
In this work , the macroscopical characteristics of diesel and diesel / lpg sprays are studied through using a digital camera with a high spatial resolution . based on processing technique for digital image , the droplets photographed , which are at the spray edge , are studied . after a comparison of the characteristics of sprays for different fuels , such as diesel , blend fuels of diesel and lpg with different weight fractions , it is shown that flash - boiling injection ( fuel containing dissolved gas ) is good for the atomization of fuel 本文对柴油和柴油lpg混合燃油的喷雾的宏观特性采用高分辨率数码相机进行测量，并运用数字图像技术处理了数码相机捕捉到的处于雾束外沿的粒子，通过比较纯柴油和不同lpg比例混合油的雾化性能，表明溶气喷射(闪急沸腾)有利于喷射油滴的雾化。
Experimental constants include : ambient temperature 291k ~ 301k , rh 15 % ~ 21 . 2 % , wind velocity 3 . 2m / s at the nozzle position and horizontal to the spray fan , others are same as the fore experiment . the tendency of the two experiments results is consistent with the tendency from simulation . that indicate the improved shield spray is better than the original shield spray in reducing spray drift , and also more better than conventional spray without shield 风洞试验参数：喷雾药液为含1 bsf的水溶液，风速1 . 4m s ，风向垂直于喷雾扇面，温度281k 288k ，相对湿度rh9 20 ；室内试验参数：喷雾药液为含2 bsf的水溶液，喷头处风速为3 . 2m s ，风向平行于喷雾扇面，温度291k 301k ，相对湿度rh15 21 . 2 ；分别在喷头下风向喷幅外的空中和地面布点收集飘失和飘移沉积的雾滴量，作为评价减少雾滴飘失效果的指标：试验结果表明：改进后的罩盖喷雾减少雾滴飘失的效果好于双圆弧未开口罩盖喷雾，常规无罩盖喷雾的雾滴飘失量大于开口罩盖喷雾。
