On the base of the development of conductive ceramics , bapbo _ 3 , a lower costs metal compound , was selected as the conductor phase of thick film resistors . for its excellent conductivity , it can replace precious noble metal and its oxides 在追踪导电陶瓷材料发展的基础上,本文选择导电性能较好的bapbo _ 3材料作为主要研究对象,致力于贱金属化合物替代贵金属及其氧化物作为厚膜电阻功能相的研究。
Hep - yr50 laser trimming resistor machine is designed with a particular all - in - one structure based on absorbing advantages from other similar trimming machines , and provided with two high - speed galvanometer scanners , an advanced laser power , an advanced q - switch and a special measuring resistor unit 激光调阻机是利用激光工艺对薄膜或厚膜电阻进行精密调节的关键设备，可用于生产手提电话、寻呼机、笔记本电脑等电器的薄膜或厚膜电阻。
For the common purpose of improving the stability of metal film resistor , this paper includes two parts . the preparation of the target has been studied in the first part , the proportion of the material of the target has been studied and the optimal proportion has been confirmed 针对提高金属膜电阻器的稳定性这一共同的目的，本文分为两个部分，第一部分是金属膜电阻器高阻靶材的研制；第二部分是金属膜电阻器专用涂料基体的研究。
Pbo - b _ 2o _ 3 - sio _ 2 glass reacts with bismuth ruthenate and lead ruthenate is produced as transition layer . the transition layer can make the interface gradually change and the properties of resistors are improved at the same time . based on the study above , the way to get series of pastes was developed 铅硼硅玻璃粉体平均粒径对厚膜电阻的性能影响有一极值点,约为1 . 51 m ,在该点处膜层的方阻值最小,电阻温度系数绝对值最小,重烧变化率最接近零值。
The target determines the precision , reliability , stability and tcr of the resistor . on the other hand , the coatings play an important role in improving the heat - resistance and moisture - resistance of the resistor . however , nowadays the study in this field is some deficient in our country 此外，金属膜电阻器的耐热、耐湿、耐腐蚀性能还直接与金属膜电阻器表面的保护涂料的性能密切相关，而目前国产的涂料在耐高温、耐高湿方面还达不到国家军标的要求。
On the base of the development of thick film pastes technology , ru - based thick film resistor pastes have been studied due to select conductive phase and inorganic binder . state - of - the - art techniques such as rolling , screen printing and sintering were used for sample preparation . effects of ingredients , printing parameters and sintering parameters , microstructure on the properties of thick film resistor ( trf ) have been analyzed with xrd , sem , dsc and electrical tests 本文在跟踪国内外厚膜浆料技术发展的基础上,以钌酸铋/银系厚膜电阻浆料为研究对象,通过选用合适的功能相和无机粘结相成分,以三辊轧制、丝网印刷和高温烧结等制备工艺为技术特征,采用xrd 、 sem 、 dsc等分析方法和电性能测试手段,系统的研究了浆料中各相的成分配比、制备工艺参数,以及膜层微观结构对厚膜电阻性能的影响规律。
Square resistance of bapb _ ( 1 - x ) bi _ xo _ 3 based thick films was near - linear increased and tcr of bapb _ ( 1 - x ) bi _ xo _ 3 based thick films was near - linear decreased with increase of content of ag . the electric conduction model of bapb _ ( 1 - x ) bi _ xo _ 3 based thick films was formed . bapb _ ( 1 - x ) bi _ xo _ 3 based thick film is actually conductive with lead and bismuth oxide , the main factors on the properties of thick film is the electric resistance and contact resistance of conductive particulates ; the electric conduction model of ag - bapb _ ( 1 - x ) bi _ xo _ 3 based thick film : the general structure of conductive network is constructed by conductance chain of ag and is submerged into bapb _ ( 1 - x ) bi _ xo _ 3 based conductive ceram 本文认为: bapb _ ( 1 - x ) bi _ xo _ 3厚膜电阻是一种掺有铅、铋氧化物的导电陶瓷烧结体,影响厚膜电阻导电性能的主要因素是导电颗粒自身电阻与颗粒间接触电阻;厚膜电阻掺银后的导电微观结构是由许多微小串联或并联的ag颗粒组成的导电链构成的结构复杂的多维导电网络,此导电网络被“淹没”在bapb _ ( 1 - x ) bi _ xo _ 3导电烧结体中。
Bai shi new development over the years , the company ' s products are mainly trade sales world - renowned brands ; has formed a production and supply of quartz crystal and ceramic capacitors , thick film resistors based serial production lines . main products include : plug posted quartz crystal surface , the surface of quartz crystals and crystal oscillators , posted plug surface , quartz oscillator vco , stickers and vco plug - round version of ceramic capacitors and vertical and horizontal layer ceramic capacitors , chip resistors and resistor ranked / exclusion order and capacitance / second polar body / mixed network 新佰仕经过多年的发展，公司贸易的产品主要销售世界知名品牌电子元器件；现已形成了以生产及供应石英晶体?陶瓷电容器?厚膜电阻器为主的系列化产品生产线，主要产品包括：表面贴石英晶体?插件石英晶体?表面贴石英振荡器?插件石英振荡器?表面贴压控振荡器?插件压控振荡器?圆版型陶瓷电容?立式与卧式积层陶瓷电容?排列电阻器?芯片电阻/排阻?排列电容/二极体/混合网路。
Abstract : in this paper interactions of bilayer lipid membrane with clotrimazole as the antifungal agent were reported in order to interpret the action basis about the molecularbiology of this drug . using the injecting method ， we prepared three bilayer lipid membranes ( blm ) respectively , and by the cyclic voltammetry method we determined properties of blm before and after adding clotrimazole into the membranes . it was found that clotrimazole could remarkably reduce the membrane resistance and demonstrated that the drug as an antifungal substance might certainly change the permeability of bilayer lipid membrane 文摘:报道了抗真菌药克霉唑与人工脂膜的相互作用，试图阐明该药的分子生物学的作用基础.用注射方法分别制备3种双分子层脂膜( blm ) ，并运用循环伏安法测量了修饰物克霉唑加入前后人工双分子层脂膜的电性质.结果发现克霉唑可显著降低膜电阻并证实该药确能改变人工双分子层脂膜的通透性
