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The study has focused on: 1 The research background and the current state of the power measurement were analyzed systematically, and then wavelet-based power measurement algorithm was certified feasible for astable signals; 2 We developed a new method of RMS and power measurement based on Dmeyer wavelet. After that three other wavelet measurement approaches were compared with Dmeyer wavelet-based measurement approach. Then the impact on measurement errors of amplitude frequency property and energy leakage of wavelet filter banks were deeply researched, and some measures were proposed to reduce it; 3 We developed a new strategy of power measurement algorithm based on lifting wavelet, which had calculation advantage compared with the first wavelet, so that it was more suitable for the realization of hardware; 4 The running system of wavelet-based power measurement algorithm based on DSP was proposed, and then it was realized on ICETEK-VC5416-A EVM board; 5 Existing problems and the further research direction of wavelet-based power sub-band measurement algorithm was discussed.

本文对基于小波变换的功率测量算法展开深入的分析研究，主要内容有：1）系统地分析了功率分解测量的研究背景、国内外的研究现状，并从能量守恒的角度验证了小波功率分频带测量算法在非平稳信号条件下的可行性；2）首次提出了Dmeyer小波变换有效值与功率的测量方法，进而通过对该方法与3种已经提出的小波测量方法的对比分析，深入研究了小波滤波器组的幅频特性和能量泄漏特性对测量误差的影响，并针对电网谐波的特点提出了减小影响的相关措施；3）首次提出了二代小波功率测量算法，对比一代小波功率分频带测量算法，它大大减少了算法实现的运算量及内存的需求量，从而更适合于硬件的实时实现；4）提出了小波功率分频带测量算法的DSP实现方案，并在ICETEK-VC5416-A EVM板上进行了实现；5）探讨了小波功率分频带测量算法目前仍存在的问题，并提出了进一步的研究方向。

In this paper a design approach for second order astatic digital servo system ispresented.

本文给出了一种具有前馈等值的二阶无静差数字随动系统的设计方法。

In order to model the interaction between lithospheric deformation and asthenosphere convection, a coupled thermal-fluid-solid approach is proposed and the corresponding finite element codes are developed.

本文针对岩石圈与软流圈的相互作用模型，开发了新的基于热-流-固三场耦合方法的有限元程序。

This is not a Marxist approach, and it will lead young people astray .

就不是马克思主义的态度，就会把青年引入歧途。

Over the years, the time expressed by atomic clocks has diverged slightly from that determined by the astronomic approach.

有许多年，由原子钟计算出来的时间与由天文学方法确定的时间产生了一些微小的差别。

A case studying of designing the key parts of an astronomic telescope modeled with extended DSM is presented, showing the approach is practicable and valuable.

最后以某天文望远镜的关键部件的实例设计过程为例，说明了该方法的可行性和实用性。

Another, somewhat simpler, approach is being developed by Szabolcs Marka, an astrophysicist, and his colleagues at Columbia University in New York.

另一种，稍微简单的方法，正在由天体物理学家索伯尔奇。马尔卡和他在纽约哥伦比亚大学的同事开发。

Now, ASU, I want to highlight -- I want to highlight two main problems with that old, tired, me-first approach to life.

现在，亚利桑那州州立大学我想强调的是——我想强调的是那些已经老掉牙的过时的但与我们息息相关的两个主要问题。

A new approach which is called asymmetric self-organizing map is proposed in this paper to address this problem.

本文对现有的自组织方法进行了分析和改进，提出了非对称的自组织映射模型。

The asymptotic global convergence of the proposed algorithm is analyzed by using the Lyapunov function approach.

通过Lyapunov函数方法分析了算法的渐近稳定性能，模拟结果验证了算法的有效性。

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％。