查询词典 quasi-periodic

Finally, to conduct a nonequivalent groups pretest - posttest quasi – experimental design to study the effect of this instruction implement on junior high school students' mathematics learning. Two seven-grade classes from the same school in Tao-Yuan county were selected to be studied. One class was assigned as the experiment group and received the experimental treatment, the other class was assigned as the control group and did not receive any treatment.

本研究采取不等组的前后测之准实验设计，以研究者自行开发之学习成就测验与课程意见量表为主要工具，并以桃园县一所国中的两个班级为研究样本，实验组接受资讯科技融入数学教学所设计的活动，控制组则实施相对应之传统教学活动。

According to the theory of public economics,we could divide public products into public products and quasi-public products on the basis of such two characteristics as: full incompetition and nonexclusion.

新颁行的《义务教育法》明确义务教育是一项&公益性事业&。所谓&公益性事业&，也就是公共经济学所说的&公共产品&。为什么说教育是一种公共产品？教育作为公共产品有何特征？

Specially,at lower power density of laser,quasi static model is used to simulate the radial heat dissipation from irradiated region to nonirradiated regions.

在数值计算中，应用部分线性法处理非线性非齐次热传导方程，得到相应的隐格式差分方程，再用追赶法求解隐格式差分方程，得出绝热边界条件下的温度的时间和空间分布，从而得出激光退火的再结晶厚度。

Constant value of vena contracta coefficient has been employed in the well-used quasi-steady models for computing the nonlinear acoustic impedance of the orifice. However, this nonrealistic assumption degrades the accuracy of the theoretical models.

常用的小孔声学非线性效应的准定常模型采用不随声强变化的vena收缩系数，这种不合实际的假设影响了非线性声阻的计算精度。

On public goods theory, professional competitive sport service goods has certainly nonrival and exclusive features in consumption is belong to quasi-public goods category.

根据公共产品理论，职业竞技体育服务产品在消费上，具有一定程度的非竞争性和排他性，属于准公共产品范畴。

First, from the point of view of production and management, the importance for developing TTU is pointed out.the status in quo of technology,The direction of progress,The demand of practical and fundamentality in Distribution Automation are analyzed for Transformer Terminal Unit. The function of equipment and technical specification which meet demand of practical duty are indicated; Second, the scheme of synchronous sampling,quasi-synchronous sampling,non-integer cycle sampling,nonsynchronous sampling and algorithm are analyzed in detail. Then,the scheme of nonsynchronous sampling and multi-chunnel is ascertained. Moreover, the method of disposal sampling data for increasing precision which calculate the number of sampling per cycle dramatic by searching zero is introduced. The technique for analyzing data,stating data,storage data for Electrical Power Quality and control scheme for compensation capacitor are explained also. Finally, The scheme and structure of hardware,key circuitry using 80C196 singlechip,the scheme and ideology of software and flow chart of part software is introduced simply.

文中首先从电力生产、管理角度出发，指出了研制配变监测终端的重要意义，分析了配变监测终端的技术现状、发展趋势、现场需求以及在配网自动化中的基础地位，提出了满足实际运行要求的装置功能、技术要求；然后对目前常用的同步采样、准同步采样、非整周期采样、非同步采样的方案和算法进行了详细的分析、比较、筛选，确定了非同步采样和顺序采样的方案，并提出了一种寻找过零点从而动态计算每周采样点数的提高精度的采样数据处理方法，文中对装置中电能质量分析、统计、存储的方法以及补偿电容器的控制方案和投切原则也做了重点说明；最后，对应用80C196单片机系统研制的装置的硬件方案、结构以及关键电路和软件设计思路、方案、部分主要软件模块的流程图做了介绍。

If the geoid or quasi-geoid model is given, GPS can be used directly to determine orthometric height or normal height, which can take the place of the traditional geometric leveling and make the seperation mode of plane control network and elevation control network in traditional geodesy become a history.

在高精度、高分辨率大地水准面模型的支持下，利用GPS技术可以直接测定正高或正常高，从而取代传统繁琐的水准测量方法，使得平面控制网和高程控制网分离的传统大地测量模式成为历史。

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, Poincaré maps, phase plane portraits, trajectories of journal center, time-history curve, amplitude spectra diagrams of the rotor motion are used. The convert and evolution course of periodical response, quasi-periodical response, double-periodical bifurcation, chaos of the system response is analyzed.(3). It is deduced that the general differential equation of bending-torsional-pendular coupling vibration about rotor with the gyroscopic moment. On the basis of this equation, the general differential equations of coupled bending, torsional and pendular nonlinear vibration about rotor with unbalance character and rubbing character are deduced.

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、Poincaré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。

The advantages and disadvantages of balanced truncation, singular perturbational method and generalized singular perturbation are analyzed. A quasi-generalized singular perturbational model reduction method is proposed.

分析了平衡截断法、平衡奇异摄动法和广义平衡奇异摄动法存在的优缺点，提出了一种近似广义奇异摄动模型降阶算法。

He differs from most other Spanish directors inasmuch that he does not ingratiate himself on pet themes such as national foibles or recent past history, but ventures out into other spheres and has no fears about embarking into the phantasmagorical, psychological or even quasi-surrealist.

他与其他大部分西班牙导演不同，他不会把自己局限于那些大热的题材中，譬如，国家当前存在的弊端，或者是近期发生的什么重大事件之类的，来拍自己的电影。他会选择一些其他题材，比如科幻题材，心理题材，超现实主义题材来挑战自己。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。