试验过的

Combining the experimental results and theoretical analysis, the following work has been accomplished.(1) Reasons of the decrease of interelectrode capacitance and the increase of discharge gap caused by the powder suspended in dielectric fluid are explained. And the mechanism that surface quality of workpiece improved by powder-mixed EDM is analyzed from this viewpoint.(2) The variation regularity of the percentage of silicon on the machined surface of workpiece has been summarized according to the experiment results when silicon powder was added into the working fluid. The entropy is introduced to explain the reasons for this variation regularity by thermodynamics.(3) The dimensional accuracy is greatly influenced by the overcut resulting from discharge gap and electrode wear in practice application. Empirical formulas for the overcut in EDM and powder-mixed EDM are established based on the experimental results using the ternary linear regressive method in this paper.(4) The influence of main factors on the machined surface characteristics has been evaluated based on the orthogonal experimental design method.

通过一系列普通电火花加工与混粉电火花加工的对比实验，运用工艺实验和理论分析相结合的方法，重点做了以下工作：(1)探讨了粉末颗粒导致极间电容减小、放电间隙增大的原因，并从这个角度解释了混粉电火花加工可以改善工件表面质量的机理；(2)以混合硅粉的电火花加工为例，实验得出峰值电流和脉冲宽度对加工表面层成分中硅元素含量的影响规律，并引入熵的概念从热力学的角度对硅元素含量变化的原因寻找了理论依据；(3)在实际加工中，由于粉末的加入使放电间隙变大，这使得混粉电火花加工的尺寸精度难以控制，本文利用三元线性回归的方法，在实验数据的基础上，建立了两种电火花加工过切量的计算公式；(4)将正交试验法应用于混粉电火花加工实验研究，并通过对实验指标极差的直观分析，得出各电参数对加工指标影响的敏感程度。

Above all, buffalo is degree of a kind of seed selection is planted relative to inferior cultivate, have stronger vitality, disease-resistant force and be able to bear or endure the ability of thick raise, from development degree taller Italy arrives the less-developed country with development inferior degree, on the history, buffalo is done not have or had fed the feed of animal source sex such as pink of flesh and blood, fish meal without raise almost, straight so far, the whole world returns the report of disease of mad without a buffalo happening ox or urticant disease, be like mad ox disease, urticant disease, avian flu, Aibola disease to wait for harm mankind health in more and more animal sex diseases today, we can say, buffalo still is a god-given Sukhavati; so far next, the gust of water milk and its nutrition character have other to suckle kind of dominant position that cannot compare, an orgnaization of England undertook grandma of water milk, grandma milk, goat and artificial synthesis are suckled savour an experiment, via repeating for many times, join the person that try to be able to accurate winkle buffalo is suckled and state they are right the partial; of its gust the 3rd, as the addition of global population and the growth that suckle kind of consumption group, allergic to milk number also rises ceaselessly, but have to suckling milk.

首先，水牛是一种选育程度相对较低的畜种，具有较强的生命力、抗病力和耐粗饲的能力，从开发程度较高的意大利到开发程度较低的欠发达国家，在历史上，水牛就没有或几乎没有饲喂过骨肉粉、鱼粉等动物源性饲料，直到目前为止，全世界还没有一例水牛发生疯牛病或痒病的报道，在越来越多的动物性疾病如疯牛病、痒病、禽流感、埃博拉病等危害人类健康的今天，我们可以说，水牛到目前为止仍是一块难得的净土；其次，水牛奶的风味及其营养特性具有其它奶类不可比拟的优势，英国的一个机构进行了一次水牛奶、奶牛奶、山羊奶和人工合成奶的品味试验，经多次重复，参试者都能准确的挑出水牛奶并表示他们对其风味的偏爱；第三，随着全球人口的增加和奶类消费群体的增长，对牛奶过敏的人数也不断增长，但对奶牛奶有。。。

An improved scheduling method based on exponential division of deadline is presented after study on the problem of prevenient average division of deadline method in this paper.The paper also proves when the relative deadline of each node is too large,the schedular performance of messages transmission task using average division of deadline will be decreased by introducing notion of quantization cost.The new method solves the problem well,and digital simulation validate the new method.

摘 要：针对平均分区的EDF算法在CAN总线中的应用出现的问题，本文提出了一种改进的基于指数分区的EDF算法，并通过引入量化误差的概念，推导证明当CAN网络中各节点相对截至期分布时间过大时，平均分区的EDF算法会导致CAN总线中信息传输任务可调度性的下降，而基于指数分区的EDF算法保证了信息传输任务的实时性，仿真试验验证了算法的有效性。

Firstly,we particularly explained the algorithmic of themusic recognition.Then,we made a study of the music characteristic and the musicrecognition methods.As for the burrs of the music signal,we put forward a curveplastic method to eliminate the burrs.Considering the difficulties of detecting thepoint of the music speech,we made use of the multi-frequency energy curve to detectthe end-point of the music signal with the crossing zeros rate.As for thedisadvantages of the large operation and influence of the formant,we improved theAMDF theory with the linear prediction algorithmic to detect the error.In order toobtain the characteristic parameter of the music signal,wo calculate the MFCCparameter to obtain the template and the pending signal characteristic parameter.Inorder to improve the rate of the recognition,considering the disadvantages of theDTW algorithmic,we find a new method to improved the DTW algorithmic bybroadening the point of the music signal and made simulation experimentation;As forthe disadvantages of the contraposition grade to the pitch,cadent and sing name,wefind a method to dynaic adjust the results of the recognition to improve the accuracyof the grade.

详细阐述了嵌入式音乐识别算法的详细设计与实现，研究了音乐语言的特点和音乐识别的侧重点，并阐述了基于音乐信号特色的语音处理及识别方法；针对音乐信号中的毛刺干扰，提出了曲线整形的思想，消除了音乐信号中的毛刺；针对音乐信号端点检测困难的特点，利用多频段能量曲线分割结合过零率来实现端点准确检测；针对音高提取运算量大且容易受共振峰影响的特点，利用线性预测残差的方法对传统的AMDF算法进行了改进并提取出了音高，在实际实现时，优化了AMDF算法，减少了计算量；为了得到较好的特征参数，通过求取梅尔频标倒谱系数的方法，分别提取了模板信号特征参数和待测信号特征参数；为了提高识别率，针对传统DTW算法的缺陷，采用了放宽端点和声刺激法改进了传统的DTW算法的性能并进行了仿真试验，使音乐识别率得到明显提高；在音高、节奏评分时，针对对位评分的缺点，采取了动态调整的方法提高了评分的准确度。

In general terms the chemical impurities are measured in a silicon rod obtained through the deposition of a small Trichloro silane sample on dedicated pilot test reactors or directly from a core sample taken from a produced polysilicon rod; both are refined by Float-zone technique (the sampling operation are performed according to the relative ASTM F1723-02 -"Standard Practice for Evaluation of Polycrystalline Silicon Rods by Float-Zone Crystal Growth and Spectroscopy").

大体上称化学的杂质在热衷的飞行员测试反应者上被获得过小 Trichloro silane 样品的沈淀的矽竿中被测量或者直接地从一个核心抽取样品从一支被生产的 polysilicon 竿拿；两者都被漂流物-地域技术精炼(抽取样品操作依照比较的美国材料试验学会 F1723-02 被运行-& Polycrystalline 矽漂流物-地域水晶生长和光谱学的竿评估的标准练习&)。

It is not enough to resolve all of the problems related to the hydraulic stability only to analyze the stable field in passing components. Finally, the paper numerically simulated the transient field in prototype's draft tube under different operating conditions by means of Reynolds stress turbulence model and analyzed the law of motion of vortex rope as well as the performance of low-frequency pressure pulsation and compared with field test results.

仅仅对机组的过流部件进行稳定场的CFD数值分析还不足以解决所有与水轮机水力稳定性有关的问题，因此在本论文的最后，采用雷诺应力湍流模型对真机尾水管在不同运行工况下进行了非稳定场的CFD数值解析，分析涡带的运动规律及其产生的低频压力脉动特性，并与真机的试验结果进行了比较，结果比较吻合。

They recruited a total of 1,224 participants aged 55 to 80 at high risk of cardiovascular disease who were already taking part in the PREDIMED (Prevención con Dieta Mediterránea) Study, a multicenter, three-arm randomized clinical trial that is testing the effect of the Mediterranean diet on primary prevention of cardiovascular disease.

他们总共对1224名55岁至80岁之间面临心血管疾病风险的志愿者进行了研究，这些志愿者已经参加过PREDIMED 的研究，PREDIMED是一个研究地中海饮食对于早期预防心血管疾病的作用的多中心的、三臂随机的临床试验。

The main contents of the present paper include: 1、The mechanism of fouling accumulation and the effects of fouling and slagging on boiler performance are analyzed. The model of fouling increasing is developed on the basis of sediment rate and denudation rate. The fouling monitoring models for boiler furnace and convective sections based on heat balance, the ones for air heater based on converted pressure difference are given. The implement results show that these models can reveal the cleanliness of boiler heat transfer surface. 2、The disadvantages of the model for boiler furnace fouling and slagging monitoring based on heat balance are discussed, and the calculation of radiant heat flux is considered as the primary difficulty.

主要包括以下内容： 1、分析了锅炉受热面污染形成的机理，从灰污的沉积率和剥蚀率角度出发，推导了受热面灰污增长的基本模型，分析了灰污热阻随积灰时间和烟气流速变化的规律，并通过大量现场试验，得到了沉积常数与时间常数的取值范围； 2、针对炉膛、对流受热面和空气预热器等不同受热面的传热特性，分别建立了基于热平衡和折算压差的污染在线监测模型，经实践验证，其监测结果能够满足现场工程应用的精度要求； 3、分析了基于热平衡原理的辐射、半辐射污染监测模型的不足之处，指出了机理模型因对炉内辐射换热量计算不准确，导致对以辐射换热为主的炉膛和以半辐射半对流的屏式过热器监测效果不够理想。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。