查询词典 as follows

The main job and contribution of this paper are as follows:Based on narrowband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, compute the cross-correlation function of FH signals from multichannels, then we get the cross power spectral density matrixCSDM Secondly, select the hops of FH signals from the CSDM via processing and analyzing the CSDM, meanwhile reduce the influence coming from noise, fixed frequency signal and other interferences; Lastly, estimating the DOA of every hop and according to the DOA, we can separate the hops, get the number of FH signals and their parameters. Propose a new method for designing the threshold in FH signal detection. This method makes it easy to get the threshold by theoretic computing and it can extremely reduce the interference of non-FH signals.Based on broadband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, get the DOA of the signals by wideband spatial spectrum estimation; secondly, separate the signals by spatial filtering using wideband beamformer; Lastly, we propose two methods for FH signal blind detection and blind parameter estimation, one is for several constant hop-rate FH signals whose dwell-time are different and another is for a single FH signal whose hop-rate is alterable.By employing spatial interpolation in broadband signal beamforming, it can reduce the number of antenna elements and corresponding RF modules, A/D converters, etc. It can also eliminate the mutual coupling between antenna elements while getting the narrower main beamwidth and lower sidelobe level.

本文的主要研究工作和贡献如下：●提出了一种基于窄带处理的FH信号盲检测和参数盲估计的实现方法，即首先求出多路信号之间的互相关，进而得到互功率谱密度矩阵，然后通过对CSDM进行对折处理来抑制噪声、定频信号及其他干扰的影响，并将所有属于FH信号的hop(每一跳的驻留时间在时频图上持续的线段)从CSDM中筛选出来，最后用阵列信号处理中的到达方向估计理论在频域中估计出各个hop的方向参数，利用方位信息完成FH信号分离并得到FH信号的数目及其各自的参数集；●提出了一种确定FH信号检测门限的策略，该策略不仅使得检测门限能够通过理论计算得到，而且还显著地抑制了非跳频信号的干扰，从而能有效地检测出FH信号；●提出了一种基于宽带处理的短波FH信号盲检测和参数盲估计的实现方法，即首先利用宽带空间谱测向技术得到接收信号的DOA，然后采用宽带波束形成技术对特定方向进行空间滤波，实现多个信号的分离，最后分别提出了两种FH信号的盲检测和参数盲估计方法，第一种方法适用于空间某个特定方向上存在着几个驻留时间不同的恒跳速FH信号和其他干扰信号的混合信号，第二种方法适用于空间某个特定方向上仅含一个可变跳速的FH信号和噪声的混合信号；●将空间插值的概念和宽带波束形成技术结合起来，提出了一种基于频域处理的宽带恒定束宽的波束形成方法。

The main findings of this study were as follows: 1. Currently, the degree of adolescents' scapegoat, cross-generational coalition and parentification was middle.

本研究的主要发现归纳如下：一、目前青少年的「代罪恙羊」、「跨世代联盟」和「亲职化」之程度，皆属於中等程度。

If you have to have RCS or CVS crud in your source file, do it as follows.

如果你要将RCS或CVS的杂项包含在你的源文件中，按如下做。

In addition, in without fight coagulate below no-no card premise, cure is as follows:(1) fights coagulate cure: Buzzing?0 Mg joins 5~7 D of the Jing Di in physiological saline 500 ML, detect at the same time cruor zymogen time, general 18~21 S, do not exceed 30 S, the 3 D before heparin of out of service is added with Huafalin [200 thousand unit adds kinase of 1];(2) make water 5% grapes...

此外，在无抗凝禁忌证前提下，治疗如下：(1)抗凝治疗：肝素60 mg加入生理盐水500 mL中静滴5~7 d，同时检测凝血酶原时间，一般18~21 s，不超过30 s，停用肝素前3 d加用华法林[1]；(2)尿激酶20万单位加5%葡萄。。。

The thesis can be divided into five parts as follows: First, the structural characteristics of finned-pipe evaporator are analyzed. After selecting suitable microelement controller, the heat-transfer and mass-transfer processes are analyzed for every microelement under the conditions of dryness, wetness and frostiness. Based on previous equations, some parameters of frostiness are confirmed and the frost-growing model is set up under frost condition. Some hypotheses are postulated and with the help of the equation of mass-conservation, energy-conservation and momentum-conservation, the evaporation model which fits in the dynamic simulation is built, which set a solid foundation for system simulation. Second, the starting and stopping behaviors under disturbed condition are analyzed and calculated by using the dynamic concentrative parameter model, which gives some advice to better prescribe refrigeration system and set theoretic foundation for carrying out automatic control of refrigeration system. Third, the normal running process is analyzed and calculated by means of rational matching theory, which gives some advice on how to better understand the parameter change under steady state and the affection of inlet-parameter on evaporator. Fourth, the simulation software with dynamic characteristic is designed, which can be applied to calculate thernio-parameter of cryogen, air humidity and frost thickness under different initial and boundary conditions, and to carry out dynamic simulation under conditions of dryness, wetness and frostiness, at the same time, to achieve detection and simulation at any stage from starting to stopping.

本文的主要内容如下：1对翅片管蒸发器结构特点进行分析，选取适当的微元控制体，就干、湿和霜工况下对每个微元分别进行传热传质分析，基于经验关系式确定霜的有关参数，对于霜工况下的霜生长建立模型，经适当假设，运用质量守恒、能量守恒和动量守恒方程建立适合动态仿真的蒸发器数学模型，为系统仿真奠定基础； 2对蒸发在大扰动下的开、停机过程，运用动态集中参数模型进行分析和计算，为更好地描述制冷系统运行的全过程奠定基础，同时也为制冷系统实现自动控制提供一定的理论基础； 3对蒸发器正常运行过程，运用动态分布参数和参数间定量耦合的观点来分析和计算，为更好地了解稳态工况下各点参数的变化情况及各入口参数对蒸发器动态特性的影响即蒸发器性能对各参数变化的敏感性； 4编写翅片管蒸发器动态特性仿真计算程序，可以计算不同边界条件和初始条件下的制冷剂热力参数、空气温湿度和霜厚度分布场，实现对翅片管蒸发器在干、湿和霜工况下的动态仿真。

The main works of this paper are as follows:(1) The various methods for determining the cryolite ratio of electrolyte were summarized and compared. The phase constituents of aluminium electrolyte system were studied, the various cryolite ratio definitions for this reason were discussed.

本文研究和测定了工业铝生产中与电解质相关的几项重要的物理化学参数，包括铝电解质分子比的测定研究，氧化铝溶解性能的研究及测定，氧化铝浓度的测定及工业铝电解槽氧化铝浓度—槽电阻曲线的绘制，铝在电解质中溶解度的研究及测定。

The contributions of the dissertation are as follows.1 Cryptology is the foundation of authentication.

论文的主要工作包括以下几个方面： 1身份认证的密码学理论基础分析。

The structures and orientation texture evolution of UFG-Copper during AARB were studied and the results were as follows:(1)Whenεis lower or equal to 1.6,the slips happen on grain boundaries and crystal planes owing to the shearing force.There occur many sub-grains possessing small angle boundaries and 5μm grains sizes within the big grains.

研究了大变形异步叠轧制备超细晶铜材过程的组织和取向织构变化情况，结果表明：(1)变形等效应变ε≤1.6时，剪切应力的作用使晶粒与晶粒之间发生滑动，部分晶粒内部晶面发生滑移，大晶粒内部转变为许多具有小角度晶界、大小为5个微米的亚晶。

Therefore at each time we get the roots of this cubic equation, we can decide if we keep or reject each root according to the continuity of the curved surface, the method is as follows: If , the relative cubic plane curve is just a circle, this circle can be gotten by solving .

因此在每次求得该一元三次方程的解时，我们根据曲面的连续性来判断这些根的取舍，方法如下：在处，所得的平面曲线就是圆截线，该圆截线可以由相截得到，即。

The main differences in chemical compounds related to the taste and flavorbetween cultured and wild prawns may be summerized as follows: 1 The content of quaternary bases in the extractives of wild prawn is higher than that of cultured prawn; 2 The content of fatty acids, C18:2ω6 is higher in the cultured prawn; 3 Many thiazole compounds were found in the odor concentrate of cultured prawn, azulene was found in the odor compounds of wild prawn; 4 The textrue of cultrued prawn meat is relatively weak.

综上所述，养殖对虾与天然对虾的尝味比较中主要差别是提取物组分的有机碱；对虾肌肉脂质比较结果是养殖对虾肌肉脂质中C18：2ω6含量特别高；对虾挥发性成分结果是养殖对虾中有大量的噻唑化合物，天然对虾存在薁类化合物；两类对虾质地比较的结果是养殖对虾质地不及天然对虾。

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。。。。