查询词典 point system

Hence, the kinetic energy of the system is zero when its potential energy has its maximum value (choose the static equilibrium position of the system as the zero point of potential energy).

当振体运动到距静平衡位置最远时，速度为零，即系统动能等于零，势能达到最大值（取系统的静平衡位置为零势能点）。

This article angle has analyzed the higher professional technical education from CBE/DACUM "the electrical control technology" the curriculum ability localization, according to the higher professional technical education "the electrical control technology" the curriculum ability localization, point out the insufficiency and flaw existed in commonly used control electric appliance choice, electrical pilot wire road map, electricity control system installment, wiring craft, electrical control line fault diagnosis system approach, new starting velocity modulation equipment and control circuit, control circuit and main circuit aspect and so on.

摘要本文从CBE/DACUM角度分析了高职&电气控制技术&课程的能力定位，根据高职&电气控制技术&课程的能力定位，指出了现行高职&电气控制技术&教材在常用控制电器选择、电气控制线路图、电气控制系统安装、接线工艺、电气控制线路故障诊断的系统方法、新型起动调速设备及控制电路、控制电路与主电路的连接等方面存在的不足和缺陷。

From the view point of vibration,automobile is divided into a body vibration system and powertrain torsional vibration system.

从振动的角度看，汽车振动系统可分为车身振动系统和动力传动系扭转振动系统。

The key point of achieving this goal and getting with compulsory education is to establish a teaching and curricula system combining the science, skills and art of teaching, as we call it, a new system of teacher education in terms of the three-position.

建构教学科学、教学技术、教学艺术三位一体的教师教育课程与教学体系，及以此为核心的&三位一体教师教育新体系&，是打造教师教育专业性，占领教师教育制高点，适应基础教育改革需要的明智之举。

Two GFRF system model identify algorithms based respectively on Signal Flow Graph/Driving Point Impedance and EDA simulation are proposed. In order to solve the problem of fault diagnosis that the inner structure and parameters of the Object under Test cannot be able to determine, a new fault diagnosis method based on the phase space reconstruction and GFRF general formula is investigated. This method builds up a bridge between the chaos theory and Volterra series analysis, which does not strongly depend on the topological structure and the testing data length, is sensitive to the fault property, traces monotonously the change of system fault, and possesses some significant predominance compared with conventional fault diagnosis methods of analog circuits.

提出了基于信号流图/驱动点阻抗法的GFRF算法和基于EDA仿真和非线性频谱响应特性分析的系统模型辨识算法，为解决工程实践中不能确知被测对象内部结构和参数时的故障诊断问题，研究了基于相空间重构和GFRF简化算法的复杂电子系统故障诊断方法，该方法建立了混沌理论与Volterra级数分析法之间的桥梁，它对被测对象的拓扑结构依赖性不强，对被测系统的故障性质的敏感，可以单调地跟踪系统故障的变化，这种基于混沌特性分析的故障诊断方法与其它的模拟电路的故障诊断方法相比较具有显著的优势。

In allusion to weak point of traditional PID control can't effectively tracking parametric variation of control system ,utilize neural network have predominance that self-study、self-organization、associative memory、concurrent processing and can get satisfactory result in complex control system on the basis of double closed loop,advance apply adaptive linear element network—Adaline network, which has self-learn and self-adjust ability.

在双闭环控制的基础上，针对经典PID调节器不能有效跟踪控制系统参数变化过程这一弱点，利用神经网络具有自学习、自组织、联想记忆和并行处理等功能和对于复杂系统控制可以达到满意效果的优势，提出了采用具有自学习和自适应能力的单神经元网络——Adaline网络，来构成一种神经网络自校正控制器。

A characteristic method is used to research into the hydraulic resonance system of a pipe- air chamber ,indicating that with a proper structure parameter and fluid parameter,the system will improve the amplitude of the end-point pressure of the pipe.

采用特征线法对用导管-气室水力共振系统提高脉冲水射流的强度进行了模拟研究，表明水力共振系统在合适的系统结构参数和流体参数情况下，可以提高导管出口处的压力振幅。

D300 . It'sa high-end SLR (single-lens reflex) camera that equipped with their EXPEED image processing system along with 51-point auto focus system and Nikon's new 3D Focus Tracking feature.

这是高完单镜反光相机，配备了他们的expeed图像处理系统，随着51点自动对焦系统和尼康的新的三维追踪对焦功能。

Because the price of photovoltaic cell is expensive and conversion efficiency is low presently, the Maximum Power Point Tracking is absolutely necessary, in order to decrease system cost and increase efficiency, The paper focuses on the stand-alone photovoltaic system and analyzes it with theory.

本文以独立光伏发电系统为研究对象，对其进行了理论分析，从系统的参数选择、拓扑结构、控制策略、最大功率跟踪及蓄电池的保护等方面作了详细的分析和研究。

Dampers off according to Stainless Steel Safety Relief Valves, Closed system requirements, system disable and open during normal operation is located in the state, Such as the pipe conveying gas temperature below the selected film melting point fusible metal when the normal operating state, the valve is open.

防火阀的通断根据系统的要求，系统停用与正常运行时是位于开启状态的，如管内输送气体温度低于所选定的金属易熔片的熔点时，属正常运行状态，阀门是敞开的。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。