Common quality standards and a professional approach to project management guarantee reliable results . the highly advanced equipment available in its laboratories makes the fraunhofer - gesellschaft an attractive partner for companies of all sizes and in all branches of industry . as well as the reliability of a strongly cohesive research network , collaboration also brings economic benefits , for the fraunhofer - gesellschaft s contribution to the partnership includes valuable knowledge acquired through cost - intensive preliminary research 在应用技术研究领域，弗劳恩霍夫协会的市场份额占30 % ，每年的研发预算10亿多欧元， 58个研究所分布在德国各地，有13000多名工作人员，每年为3000多家客户完成约11000项科研合同，并申报约500余项专利，为德国的工业、技术和经济发展作出了巨大贡献。
Polishly packed , and also they have the traditioal flavor characteristics , enjoy very favorable market comments . our products win more than ten certificates including the national and provincial awards . the trademark of " qianjiang brand " was ranked famous brand name of zhejiang province in 1999 . xiaoshan dried radish of " qianjiang brand " was appraised as name brand of zhejiang in 2001 , and also it obtained national green foodstuff authentication in 2004 生产的“钱江牌”系列产品香气浓郁，咸淡适口，包装精良，具有传统风味特色，广受市场青睐，产品先后荣获十余项国家级、省级奖项， “钱江牌”商标于99年荣获浙江省著名商标， “钱江牌”萧山萝卜干2001年被评为浙江省名牌产品， 2004年获得国家绿色食品认证。
In our company , there are strong technical forces , advanced productive technique and specifications all in readiness . we hold 21 patents for electric metal apparatus with 65 series and more than 150 persons at present . in our company , there are strong technical forces , advanced productive technique and specifications all in readiness 公司技术力量雄厚，生产工艺先进，产品规格全，拥有电力金具专利30余项， 80多个系列， 1000多个品种， jkh系列跨径进户线线夹， pjj系列平行接户线耐张线夹， ht系列配护罩户内铜线卡等专利产品， 97年被北京城区供电局发文推荐为指定产品。
It is constructed that radial impact and rubbing dynamics differential equations of the rotor system having the nonlinear rigidity on the unsteady and non - linear oil film . the bifurcation and chaos behavior of impact and rubbing fault rotor system caused by the parameters of nonlinear rigidity , rotor rotating speed , eccentric mass is analyzed , in the numerical value analysis method . the bifurcation diagrams , maximum lyapunov exponent diagrams , poincar maps , phase plane portraits , trajectories of journal center , time - history curve , amplitude spectra diagrams of the rotor motion are used ( 2 )建立了具有非线性刚度的转子系统在非稳态非线性油膜力作用下的径向碰摩动力学微分方程,并应用含高阶余项的非线性动力方程的线性化数值法研究了此类系统响应的复杂动力学行为,利用转子响应的分岔图、最大lyapunov指数曲线、 poincar截面映射、时域波形、相轨线、轴心轨迹、幅值谱等图形分析了系统响应的周期运动、拟周期运动、倍周期分岔、混沌等运动形式的转化与演变过程,重点研究了非线性刚度、转子转速、偏心质量等系统参数对碰摩故障转子系统的分岔和混沌行为的影响。
It is engaged in developing and producing the transmission parts , such as accurate gear wheel , axles , etc . the company has international advanced technology , and it has been developing over 20 new products , the following three products : motor startup gear , swing bearing and holing rack are the new high - tech product of jiangsu province 该公司为集团公司与海外留学归国人员共同创办的一家高新技术企业，致力于汽车用精密轮轴类等传动产品的开发锻造生产，技术水平达到国际先进水平。企业现已完成新品开发20余项，其中自主开发的汽车启动电机轮汽车电机启动器用保持架电锤用摆杆轴承球头短轴等三只产品被认定为江苏省高新技术产品。
The precision duhamel integration solution for the linearization equation is also given from the theory of linear differential equation . the calculating results show that the new method can improve the calculation precision greatly . in fact , the truncation error is not limited by this method , it can arrive the precision according to the requirement 本文的主要工作有以下几个方面: ( 1 )由于非线性项的存在,使得多数情况下难以得到非线性动力方程的解析解表达式,目前常使用数值积分方法来求解非线性动力学方程的解,但常规计算方法的计算精度不很理想,本文提出了含taylor展开项中高阶余项的非线性动力方程的线性化数值计算方法,构造了瞬态线性化方程,给出了duhamel积分的表达式。
