By the use of gelation - flow - casting method , the troubles caused by the structural characteristics of pvf resins were resolved , and the produced films met a bright foreground of application with super properties such as uv resistance , mechanical strength and light transmittance 该工艺克服了聚氟乙烯自身结构特性给成型带来的困难，得到的薄膜产品具有耐候性强、强度高、透光率大等优点，并有很好的应用前景。
The mechanical property , light transmittance of ion exchange strengthened solar cell cover glass and the effect of ion beam bombardment on its properties are investigated by dynamic mechanical analyser ( dma ) , microscope , sem , uv / visible spectrophotometer and micro hardness instrument respectively 摘要系统研究了太阳能电池盖片玻璃经离于交换增强（化学钢化）后的机械性能、透光率以及离子束轰击对盖片性能的影响。
The damage and the decrement of light transmittance of ion exchange strengthened cover glass arc much lower than that of as - received one after ion beam bombardment , which demonstrates that ion exchanged solar cell cover glass has better resistance to ion beam bombardment 结果表明，经离子交换增强后的盖片玻璃，弯曲强度最大可以提高约4倍；且在受到离子束轰击时的损伤以及透光率下降的程度都小于原片玻璃，说明化学钢化玻璃具有较好的耐离子束轰击的能力。
Distance between target and substrate get longer also increase the transmission of aln films . as the temperature of substrate get higher , the transmission of ultrathin aluminum films decrease slightly . nitrogen gas concentration and sputtering time barely take effect on the transmission of aln films 发现,随着工作压强的升高、靶距的增加,薄膜的透光率上升;基片温度的升高在非晶衬底上会导致样品透光率的下降;而氮气浓度和溅射时间对薄膜的透光率影响不大。
Through research of automatic dosing system , established by determining automatic dosage in the methods of transmittance pulsation , streaming potential and mathematical model , it can be concluded that the automatic dosing system brought forward in this paper can fulfill requirements of the technics . likely , this system can also be applied for dosing of other chemicals in water plants , chemical dosing of wastewater treatment plants and other similar places 通过对采用透光率脉动、流动电位、数学模型等方法确定混凝剂投加量建立的自动配投系统的研究表明本文提出的自动配投系统能满足工艺的要求：同样该系统也适用于给水处理厂其他药剂的投加，适用于污水处理厂及其他类似场合药剂的投加。
The relationship between spectrum and preparation conditions were studied in this paper . the results are listed as following . the transmission of ultrathin aluminum films increase evidently , when the working pressure arise . with the increase of sputtering time , the transmission of ultrathin aluminum films decrease linear 然后利用双光束分光光度计测定了其透光率,研究了透光性能与各制备条件之间的关系,发现,随着工作气压、基片温度、靶基距的增大,薄膜的透光率有不同程度的增大;但透光率随着溅射时间的增加而呈近线性下降。
In order to efficiently improve the stability of the apparatus , a dual - optical detection circuit was adopted . to eliminate the multiple scattering effects on transmittance measurements , the range of the transmittance was limited to 70 - 100 % by adjusting the width of the light flow cell and changing the intensity of the incident light through regulating the load voltage of the laser light source . moreover , the data acquisition software was programmed in microsoft visual bas 通过调节激光光源负载电压改变光强度及调摘要整检测池的宽度，消除了多重散射对透光率的影响，将透光率的变化范围控制在满足beer1a毗ert定律的范围内工将温度、溶液密度和透光率信号经模数转换，并用microsoftvisualbasic语言编写的数据采集软件，实现了实验过程中各被测量的自动连续采集。
The weight loss temperature at 5wt % of bulk p ( mma - chmi ) / ommt2 was improved by about 100 contrast with that of pmma and mechanics properties were improved partly under the condition that the transparency was not decreased greatly indicated by and organic mmt ( ommt ) dispersed in the polymeric matrix evenly as nanostructure 结果表明：在基本不影响材料的透光率的前提下，本体法p ( mma ? chmi ) ommt2的5wt热失重温度比pmma提高100左右，其维卡软化温度提高4 ? 7 ，而且其拉伸等力学性能有不同程度的提高。
The components , microstructure , luminousness , thickness and surface topography of the films were analysised via xrd , uv ? vis , xps , ellipsometric examination and stm . the photocatalytic properties of these fims are characterized by the decomposition rate of methylene blue or rhodamine b . the effect of sputtering power , temperature , o2 mass flow , bias , w - doping and sputtering time on photocatalytic properties are discussed 采用x射线衍射仪、紫外-可见光分光光度计、 x光电子能谱仪、薄膜厚度测试仪及扫描探针显微镜等测试手段,研究分析了薄膜的组分、结构、透光率、膜厚和表面形貌等。
On the basis of theory analysis , the average transmitted light intensity ( correspond to dc value ) was determined as characteristic parameter of raw water using photoelectric method for monitoring the fluctuation of transmitted light and photometric dispersion analyzer ( pda ) . the dc value was closely related to both particle concentration and surface area of sand clay simultaneously . the experimental results shows that there is an exponential function relation between dc and surface area of sand clay in unit volume water ( sp ) : dc = asbp in which a and b are empirical coefficients . then the formula of macromolecule flocculant dosage is found to be d = f ( dc ) = e ( dc ) f in which e and / are empirical coefficients and the average correlation coefficient equal to 0 . 981 . so the model of automatical control system of water treatment plant was established using the formula 应用透光率脉动检测技术和光散射颗粒粒度分析仪( pda ) ，通过理论分析，将pda的输出信号之一? ?平均透光强度(对应于dc值)作为原水的特性表征参数， dc值可以同时反映颗粒浓度和比表面积因素的影响，试验结果证明， dc值与单位体积水中泥沙颗粒总表面积s _ p之间具有很好的幂函数关系： dc = cs _ p ~ d ，式中c 、 d为经验系数，进而得到了以dc值为参数的高分子絮凝剂投药量公式： d = f ( dc ) = e ( dc ) ~ f ，式中： e 、 f为经验系数，平均相关系数达0 . 981 ，利用所建立的公式，建立了前馈? ?后馈联合控制的在线自动投药模型。
