短周期

• The long period attenuation relationship of acceleration response spectrum is developed using this database . the short - period attenuation equation is developed by using the analog strong motion records of western north america . by connecting the short period and the long period attenuation relationships together , the wide period ( 7 " = 0 . 04 - 20sec ) attenuation relationships for horizontal acceleration response spectrum of western north america are obtained
  与用模拟式强震仪记录所得出的美国西部地区短周期( t = 0 . 04s - 4s )加速度反应谱衰减关系结合，得出了美国西部地区水平向基岩宽周期( t = 0 . 04 - 20s )加速度反应谱衰减关系。
• The aircraft ' s longitudinal motion short period poles and long period zeros in right plan e may make the aircraft control system be not got by only using qft . so pole and zero assignment by state feedback is needed to change this circumstances and then qft is used to get the control system . simulink results are given to prove at the system meets the requirements .
  飞机纵向运动方程的短周期和长周期的右半平面可能存在零极点对问题，这对飞机控制造成不利影响，直接利用定量反馈理论不能满足要求。本次论文首先进行短周期状态反馈极点配置，然后利用定量反馈来解决这个问题。通过仿真分析得到满意的结果。
• This text went along the analysis to the conducting characteristics and the restricting factors of everyplace festival activities , and as an example with the luoyang peony flower meeting in henan in detail demonstrated the influence factors of the successful tour festival actives and the development characteristics of the life cycle
  本文对各地节庆活动的举办特点与制约因素进行了分析,并以河南洛阳牡丹花会为例详细实证了成功旅游节庆活动的影响因素和生命周期阶段的发展特点。总的说来,洛阳牡丹花会旅游产品周期呈现出“主循环-再循环”模型与短周期(多曲线)变化的特征。
• This platform is then used to study the temperature distribution and fluctuation of module ' s wall , the fluctuations of thermal control system , temperature and humidity in the cabin for the short and long cycles of the thermal environment changes . this thesis suggests a temperature control method for cooling loops , a temperature and humidity control method of the cabin air and simulates their effectiveness
  用该平台仿真了舱壁的温度分布及波动特点，研究了热辐射环境的短周期和长周期波动及舱内热负荷波动对热控制系统及舱内空气温度、湿度造成的动态影响；给出了热控回路温度控制方法，利用最佳去湿流量的概念提出了具有回热流程的舱内空气温度、湿度控制方法，对控制效果进行了动态仿真。
• This thesis firstly discuss that the problems of quality management of dalian locomotive manufacturing works under the situation of market economy after reviewing the actuality of its quality management , in allusion to the key elements which give great impact on the core competitive ability of the enterprise , such as the shorter r & d period , the higher quality level , the lower cost level , etc . the further analysis discuss that the problems in quality management of the works , after combine with the feature of the works
  首先，本文在回顾大连机车厂质量管理现状的基础上，引出市场经济下该厂质量管理存在的问题，围绕短周期、高质量、低成本这几个影响企业核心竞争能力的因素，结合该企业的特点进行研究后，对目前该企业质量管理存在的一些问题进行深入分析。其次，本文在对质量管理理论进行研究的基础上，提出机车制造企业贯彻全面预防的原则、以数据说明问题以及质量管理永续改进的理念。
• From this paper ' s study , it had been identified that the pushover analysis method was reliable in scope below : ( a ) low - middle rise , regular , the first model deformable structures , ( b ) short - period structures , ( c ) middle - rise non - symmetric frame structures , ( d ) middle - rise vertical - irregular frame structures , ( e ) middle - rise base - isolated structures , etc . it had also been identified that the time history analysis method could be replaced by the pushover analysis method when the pushover analysis method was reliable
  通过本文的研究，证明了pushover法在如下结构中的应用具有足够的准确性：中低层、规则、以第一振型为主要变形特征的结构，短周期结构，多层不对称框架结构，多层竖向不规则框架结构，多层基础隔震结构。同时证明了在pushover法的适用范围内，可以应用简单的pushover法代替复杂的非线性动力时程分析法对结构进行抗震性能评估。
• In this paper , the backward simulation was summarizd at home andabroad , the characteristics of shell nosing were introduced , the theory and scheme of backward simul - ation of shell nosing was constructed , the determined methods of the boundary conditions were put forward in backward simulation for the processes of shell nosing
  本文介绍了将无陀螺捷联惯导系统应用于飞航导弹制导的一些问题.对这系统中短周期变化量在更新时,数值积分算法的阶次对制导系统的影响进行了理论分析,并结合某型号飞航导弹的有关参数进行实时仿真,验证了理论分析的正确性.这为无陀螺捷联惯导系统应用于工程实践提供了一定的参考