能量守恒

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 the fourth chapter, making the assumption of local charge nonequilibrium and taking energy conservation into account, we ex plained the odd and even multiplicity distributions in different rapidity windows and the anomalous dependence of multiplicity moments on energy in narrow rapidity windows.

第四章用局域电荷不平衡的假设和对能量守恒的考虑很好地解释了不同快度窗口中带电多重数的奇、偶分布和窄快度窗口中多重数矩的反常能量依赖性。

The law of conservation and transformation of energy is the chief basis of engineering practice.

能量守恒和能量转换定律是工程实践的主要基础。

The law of conservation and transformation of energy is the chief basis of physical,astronomical and chemical reasoning

能量守恒和能量转换的定律，不仅是工程实践的主要根据，而且也是物理、天文以及化学等方面推理的主要根据。

The law of conservation transformation of energy is the chief basis of physical,astronomical chemical reasoning as well as of engineering practice.

能量守恒和能量转换的定律，不仅是工程实践的主要根据，而且也是8tt t 8。

The law of conservation and transformation of energy is the chief basis of physical, astronomical and chemical reasoning as well as of engineering practice.

能量守恒和能量转换定律不仅是工程实践的主要基础，而且也是物理、天文以及化学等方面的主要基础。

This paper researches a optical sensor and a new method for product oil identification and mixed oil distinguish and calculates the light intensity of the Fresnel reflection occurred at the interface between the product oil and a measuring probe. The product oil and oil mixtures are analyzed by using the principle of energy conservation and the inductor model of an electron cloud.

通过分析光的变化磁场的电磁感应对介质的作用以及光在介质分子间能量传递过程建立的电子云导体模型，运用能量守恒原理对光在介质中的传播以及折射现象进行了研究，对不同成品油及其混油的折射率进行测量及相关计算，得到了计算成品油折射率和识别混油的方法。

According to the principle of conservation of energy,the distribution of explosiveenergy is qualitatively analysed.

根据能量守恒原理，定性地分析了炸药能量的分配。

Between above two cases, if the single particle collides with the crowded-particles in one, or two dimensional-links, their motions might obey either energy, or momentum conservations.

介于上述两者之间，一个单粒子与一维紧密相连的粒子群的碰撞运动，不是动量守恒可以忽略，就是能量守恒可以忽略。

The Bucher diagrams of the Carnot cycle are used to present vividly three-heat-source cycle s.

应用卡诺循环的Bucher图形象地表示出三热源循环，并由图中的相似三角形直接导出三热源循环的能量守恒方程、熵守恒方程和性能系数。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。