According to the experimental data of droplet size 、 particle spectrum range 、 droplet cone shape 、 flow rate 、 cover area and cover area rate which obtained through changing the pressure of power sprayer and the nozzle diameter in greenhouse ， this paper made comparative analysis on atomizing performance in same pressure and different nozzle type between same nozzle type and different pressure . the conclusion is that : the ejection rate and the droplet cone shape change with the variation of pressure and nozzle diameter ， average particle diameter decreases obviously and particle quantity increases obviously with the increase of pressure and decrease of nozzle diameter . these results will lay experimental foundation for precise spraying 、 low pollution and highly effective operation 本文根据温室内动力喷雾机压力与喷嘴孔径的变化影响雾滴大小、粒谱范围、雾锥形状、流量、覆盖面积及覆盖面积率的试验数据，对相同压力下不同喷嘴型号和相同喷嘴型号时压力不同时的微粒化性能进行对比分析和研究，得到如下结论喷出量与雾锥形状随着压力和喷嘴孔径大小变化而变化；平均粒径随着压力的增加和喷嘴孔径的减小而明显减小；粒数随着压力的增加和喷嘴孔径的减小而明显增多，为精喷量、低污染、高防效的防除作业奠定了实验基础。
Fuel cells are an important new technology that offers high efficiency , low pollution and the opportunity to diversify the energy sources that a country relies on . the range of applications for fuel cells includes aerospace applications , life support systems , submarine power supply , buses , automobiles , bicycles , distributed electricity generation , independent household generation systems , back - up power supply systems for manufacturers and other business enterprises , notebook pcs , pdas , mobile phones , portable power supply for electrical appliances and military applications 燃料电池是高效率低污染多元化能源的新科技，应用范围包含太空能源生命维持系统潜水艇动力公车汽机车脚踏车分散式发电家用独立发电工商业备用发电系统notebook pda手机电器产品携带式电源军事国防用途之电源设备等。
With high and new technology industry as development target , and modern manufacturing as main body , the development of hexi new city highlights high and new technology industry that meet the new brand requirement ? software development and r & d of high technology , fully utilizes the capital and technology at home and abroad , absorbs a batch of high and new technology enterprise group by virtue of the advanced technology park , follows the road of new industry development ? high technology , high added value , high employment rate , low cost , low energy consumption and low pollution 河西新城发展高新技术产业方向明确，以现代制造业为主体，重点发展软件开发、高科技研发等符合新城品牌要求的高新技术产业，充分利用国际、国内的资金和技术，大力引进技术密集型的企业，依托先进的科技园，聚集一批高新技术企业群，走高科技、高附加值、高就业率和低成本、低耗能、低污染的新型工业发展之路。
We care about the ideas and preferences of our clients . for us , it would be an important source for the interior design . we would help you to make your dream house come true . by selecting the low pollution materials to reduce the harmful smell after the construction , we would strive to maintain the healthy interior environment 我们在乎业主的想法与美感,对我们而言,您的机能需求是最重要的设计构想来源.我们想帮你完成你的梦想住宅或空间.在室内建材的选择上,我们为业主挑选低污染的室内建材,以避免施工后的刺鼻味道
Coal - water slurry is a new type of clean fuel as a replacement for oil . this paper introduces the tests of maoming no . 2 oil - fired 220 t / h utility boiler being retrofitted to fire coal - water slurry , including slagging tendency , heat transfer performances and pollutant emissions . firstly the k - ? two - equation turbulence model is used in numerical simulation for the side - air burner , compared with the practical measures and tests , good accordance achives 水煤浆是一种低污染、高效率、流动性强的代油新型清洁燃料，本文针对广东省茂名热电厂2 #油炉改烧水煤浆示范工程，对锅炉改造后的结渣特性、炉内传热特性和污染物的排放特性进行了试验研究。
We show that an increase in the steady - state economic growth rate is due to the expansion of biotechnology in a agricultural production technology has innovative technological change and improve quality of environment and the dynamics of the short - run growth rate results in the transitional behavior 本文也尝试分析预料到的低污染农耕技术采用对经济成长的短期和长期的动态效果，发现从宣告到全面使用该项新技术前，产出成长率是下降，直到新的农耕技术开始使用，产出成长率才会上升。
Abstract : by means of analysing the difference of fuel feature of organic solid wastes and coal ， this paper discusses low pollution ， low corrosion and high efficiency technology of organic solid waste incineration from several factors including controls of technology ， temperature ， residence time , air ratio and the use of the additives and flue gas 文摘:通过分析固体有机废物与煤的燃料特性的不同及其对燃烧的影响，从工艺控制，温度控制，停留时间选择，送风控制，添加剂以及烟气循环使用等方面探讨低污染、低腐蚀、高效固体有机废物的焚烧技术。
Technological development of gasoline ecu promote the whole vehicle industry . taking use of technology of ecu can effective improve power , economic and emission of gasoline . it ' s one of the most effective methods that can make gasoline realize high - efficiency , low - pollution 汽油机电子控制技术的发展给整个汽车工业带来了巨大的生命力，采用电子控制技术能有效的改善汽油机的动力性、经济性及排放指标，是迄今为止实现汽油机高效率、低污染的最有效的、最简洁的途径之一。
Development of large coal mines , high - efficiency production technical equipment of coal , development and utilization of coal gas resources , high - efficiency and low - pollution large coa1 generating system , power plant of urban heat and power combined production , fine processing of coal , development of renewable energy resources 大型煤田开发,煤炭高效生产技术装备,煤气资源开发利用,高效低污染大型燃煤发电系统,城市热电联产电厂,煤炭精深加工,可再生能源开发等。
