模拟

Then, on the basis of the functional verification, the system architectures of the radio frequency analog front end and the control logic circuit for the passive UHF RFID transponder are studied and designed with low-power design techniques. The RF AFE circuit includes rectifier, matching network, backscatter, regulator, AM demodulator, voltage reference, local oscillator and power on reset circuit, and so on. The control logic circuit contains clock synchronization module, decoding module, coding module, cyclic redundancy checksum module, power management unit, control unit, shift register and memory.

然后，在功能验证的基础上，重点研究了无源超高频射频识别标签芯片射频模拟前端电路和控制逻辑电路的系统架构，并采用低功耗设计技术对其进行了设计，射频模拟前端电路设计包括了整流器、匹配网络、反向散射电路、稳压器、AM解调器、电压参考源、本地振荡器以及上电复位电路等，控制逻辑电路设计包括了时钟同步模块、解码模块、编码模块、CRC校验模块、功率管理单元、控制单元、移位寄存器和存储器等。

By using the similarity of wave crest to cylindrical lens ,a new method for measuring the velocity of liquid phase wave in the range of specified wavelengths was proposed, its applicational scope was determined by means of simulation evaluation,and meantime,this model was simulated in the lab.

探讨了低表面张力液体的表面波波速与波长的关系，利用该液体的单个波峰性质与圆柱透镜性质相似的特点，提出了一种新的在特定波长范围内测量该液体相速度的方法，并通过模拟计算确定了该测量方法的适用范围，同时在实验室模拟了该模型，实验结果表明在一定范围内该测量方法具有较高的精度。

The relationship of wave velocity to wavelength of surface wave of liquid with low surface tension was discussed.By using the similarity of wave crest to cylindrical lens,a new method for measuring the velocity of liquid phase wave in the range of specified wavelengths was proposed, its applicational scope was determined by means of simulation evaluation,and meantime,this model was simulated in the lab.

探讨了低表面张力液体的表面波波速与波长的关系，利用该液体的单个波峰性质与圆柱透镜性质相似的特点，提出了一种新的在特定波长范围内测量该液体相速度的方法，并通过模拟计算确定了该测量方法的适用范围，同时在实验室模拟了该模型，实验结果表明在一定范围内该测量方法具有较高的精度。

Based on kinetic experiments, the reaction and deactivation kinetic models are obtained by least square method.

对比实验数据和模拟结果表明，该模型可以较好地模拟稳态条件下的反应过程特征。

Decapitator allowed the designers to focus on one goal and and that was to take the modeled analog sound even further and with more detail than their previous plugins, creating a realistic high quality analog saturation that can be used in all aspects of audio production.

Decapitator允许设计师在一个重点和目标，那就是采取模型模拟声音再进一步，超过他们以前的插件细节，创造一个现实的高品质模拟饱和度，可在音频生产的各个方面使用。

By using WRF model, the transformation of KOPPU (a tropical storm in 2003 in Northwestern Pacific Ocean) from tropical storm to extratropical cyclone and untransformation KETSANA that will be classifed as "decayer" is simulated, also, the thermodynamic and dynamic structures are analyzed during koppus evolution.

本文通过对热带风暴KOPPU变性过程的数值模拟，同时对热带风暴KETSANA衰退的过程模拟来对比分析台风变性的特征。

The effect of anaerobic biological treatment on decoloration of dye wastewater was studied under the simulated experiment conditions.

模拟中温厌氧消化条件，对模拟染料废水的厌氧生物处理进行了研究。

Then the FLUENT software was used to simulate the amphibious vehicle' ambient flow field through defining the unsteady boundary condition. The lift, resistance, velocity, pressure, and wave of the amphibious vehicle moving in the regular waves were obtained, which can avoid the errors resulted from neglecting the free surface and provides theoretic basis for the research on optimization design of high performance amphibious vehicle.

在计算出某改进型两栖车在微幅规则波中高速迎浪运动时升沉和纵摇特性的基础上，运用FLUENT软件，通过自定义非定常入口边界实现了两栖车在微幅规则波中运动的三维流场数值模拟，得到了升力、阻力、速度、压强和兴波等流场参数，实现了两栖车在波浪中的绕流场数值模拟，解决了以往由于忽略兴波特性导致数值计算结果随航速提高误差不断增大的问题，为高性能两栖车的外形设计研究提供了理论依据。

The electron trajectory in the deflection system of electron gun is calculated by using the boundary element method and the Runge-Kutta method.

采用边界元法与等效磁荷法，模拟了偏转聚焦系统的非均匀磁场，再利用龙格－库塔法模拟出电子在该系统中的运动轨迹。

The following key future research fields are needed to understand and predict Antarctic Ice Sheet mass balance: Observation and modeling of the surface elevation changes, determination of surface mass balance and its distribution over drainage basins as well as fluxes at the grounding lines and the bottom melting underneath ice shelves, understanding of the deglaciation history, development, comparison and improvement of all kinds of models related to modeling and prediction of ice sheet mass balance.

南极冰盖物质平衡未来的重点研究领域是开展冰盖表面高程变化的监测与模拟，确定表面物质平衡及其在各冰流盆地的分布，着地线的冰流通量，冰架底部的融化，了解冰后期冰盖退缩的动力过程，以及开发、对比和改进与冰盖物质平衡模拟和预测相关的各种模型。关键词：南极冰盖；物质平衡；进展与展望

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％。