查询词典 exponent notation

The gap method is better than other methods to calculate the infiltration amount of wind through windows and doors gap, but the infiltration characteristic exponent of the gap method is influenced by some factors, such as differential pressure、fluid state、gap width、geometrical shape etc, It's Range of.

相对于其它方法，缝隙法可较准确的计算通过门窗缝隙的渗风量，但是缝隙法中的渗风特性指数受到压差、空气流态、缝宽、缝隙几何形状等因素的影响，变化范围在0.5～1.0之间，工程应用中一般取0.67，这给渗风的计算带来很大误差。

Based on the research results of Chaos theory, in this dissertation, it has made detailed analysis of the chaotic signal generator. Firstly, the characteristic and various detection methods of chaotic signal are recommended. Secondly, with the aid of software, such as MATLAB, PSPICE, EWB, etc, discussion of the process of generating chaotic signal proceeds. Through simulation, the output result of several kinds of chaotic circuit are analyzed and compared. Thirdly, aiming at Chuas chaotic circuit, through debugging, the impacts by components and parts in the circuit, such as operation amplifier, capacity, inductor, etc, has been further investigated. And then provides a new scheme to implement Lorenz chaotic system, the circuit design and analysis are presented in detail and it can be realized by the hardware of programmable arrays FPGA, the experimental results indicate that this scheme has the advantages of easy operation, flexible design and high efficiency. An application example in secure communications is also provided. Finally, through picking up the characteristic parameter-Lyapunov exponent of the Chaos we can analyze the performance of different chaotic signal generators.

本文在混沌理论研究成果的基础上，对混沌信号的产生做了详细的分析，涵盖以下内容：首先介绍了混沌的定义，混沌信号的基本特性和各种判别方法，特别是对简单的一维Logistic映射的硬件实现问题做了初步探索；其次对混沌信号的产生方法进行讨论，借助于MATLAB、PSPICE、EWB等仿真软件，对几种混沌电路输出的混沌信号进行了分析比较，并在此基础上针对典型三阶连续自治系统Chua's电路作进一步实验研究，通过混沌电路调试，深入研究电路中各元器件，特别是运算放大器、电容、电感等对混沌信号时域以及频谱的影响；再次研究连续混沌系统的数字化硬件产生，设计了Lorenz混沌电路在现场可编程门阵列FPGA上实现的新方案，在保密通信中的应用实验结果表明该方案具有操作简单、设计灵活、效率高等优点；最后针对不同混沌系统，采取不同算法，提取混沌特性参数Lyapunov指数，进而对不同的混沌信号发生器的性能进行了分析。

With the concept, the fractional lower array power is formulated and it is theoretically proved that the power is finite and reasonable for beamforming, provided thatthe fractional order does not exceed the half of the noise characteristic exponent.

根据分数低阶统计量和零阶统计量，这部分提出强冲击噪声环境下表现出稳健的波束形成性能的三种新的波束形成算法：分数低阶最小方差无畸变响应波束形成算法、线性约束最小几何功率波束形成算法和最小几何误差波束形成算法。

According to the geology and well test data of Neopaleozoic tight reservoir in Tabamiao region, we begin with the conventional log response characteristic analysis and extract the classification ratio parameters to visual identify and evaluate reservoir characteristic. That is the lithologic, electric and physical ratio parameters and gas synthetical characteristic exponent.

依据塔巴庙区块上古生界致密储层各种地质、试井成果等的资料，从常规测井响应特征分析入手，提取建立了一套直观识别评价储层特征的分类比值参数，即"四性"测井特征参数：岩性比值参数、电性比值参数、物性比值参数和含气综合特征指数。

At first, a model of a pair of excitable neurons coupled via gap junction is built by Chay model, the effect of the strength of gap junction on the synchronous oscillation is studied;then, the synchronous oscillations of a 2-D network are also studied;at last, the Lyapunov exponent and phase portrait are utilized in the analysis of nonlinear, the approximate entropy is utilized to measure the complexity.

首先以Chay模型为基础建立了两个神经元电突触耦合模型，研究了不同电突触耦合强度对两个神经元同步振荡的影响；其次，研究了可兴奋神经元组成的二维网络的同步振荡；最后，应用李雅普诺夫指数和相图分析了同步振荡的非线性，应用近似熵分析了同步振荡的复杂性。

The changes of respiration, rotten exponent, activity of protective enzyme and the other relevant substance of the chayote fruits were examined.

将佛手瓜分别在－1~1℃、3~5℃、8~10℃和常温下贮藏，测定其贮藏过程中呼吸强度、腐烂指数、保护酶活性及相关产物的变化。

Wolfgang Amadeus Mozart (1756~1791) is a well-known exponent of a golden era of the Classicalism, and his piano work is recognized as the most difficult performance in all of the composers. The main problem is to grasp the style correctly.

内容提要：莫扎特是古典主义全盛时期的代表人物，他的钢琴作品被公认是几乎所有作曲家的作品之中最难弹的，而这主要体现在对其作品风格的正确把握上。

And the singularity exponent is uniquely determined by the viscosity coefficient of the material.

在线性硬化条件下，裂纹尖端的应力和应变场具有相同的幂奇异性，奇异性指数由材料的粘性系数唯一确定。

Freundlich adsorption exponent (0.6382, 0.6844) and common logarithm of adsorption index (1.6932, 1.7115) for peat and humin are almost equal. They indicate that humin may control the binding ability of Ni(superscript 2+) onto peat. The results show that humin can act as a potential material for permeable reactive barrier.

泥煤和胡敏素吸附镍Freundlich吸附指数(0.6382， 0.6844)和吸附系数常用对数值(1.6932， 1.7115)数值非常接近，表明胡敏素组分可能决定了泥煤的吸附能力，因此胡敏素将可作为有潜力的可渗透性屏障地质材料。

The main reason why American mutual fund is so advanced is that there is the concerted mechanism environment for mutual fund, such as the mature financial market, sufficient investment capital supply, well-developed system of laws and so on. Adopting the specific exponents of Shanghai and Shenzhen Security Market, fund exponent yields, all weekly yields of mutual fund in specific periods, etc., the positive analysis of the coordination of Chinese mutual fund and Security Market demonstrates that this coordination is not ideal generally. On condition that the market characteristic of mutual fund is made clear, mutual fund can develop conceitedly and healthily by developing security market, increasing market efficiency, providing more fund, improving fund management, standardizing relative system of privately offered funds and so on, and optimizing the market environment to develop mutual fund.

美国开放式基金之所以发达，主要原因在于开放式基金具有协调发展的制度环境，如成熟的金融市场、充足的投资资金供给、完善的法律体系等；采用沪、深证券市场特定指数与基金指数收益率，及特定时期内所有开放式基金的周收益率等指标，对我国开放式基金与证券市场的协调性的实证分析发现，二者协调性程度总体上不理想；在明确开放式基金发展的市场过程性质的前提下，通过促进证券市场的成熟、提高市场效率、完善法律、拓宽基金资金供应渠道、完善基金治理结构、规范私募基金发展等配套措施，优化开放式基金发展的市场环境，才能不断促进开放式基金的协调、健康发展。

Don not attempt to do something which you can not to do.

不要企图做那些办不到的事情。

The expression of CTGF and TNF-αweredetected by immunochemistry and the number of Clara Cells was calculated.

光镜下观察肺组织的病理变化，采用免疫组化染色观察肺组织中结缔组织生长因子和肿瘤坏死因子-α的表达和Clara细胞的数量。