查询词典 parameter

Adrenalin is a kind of nerve substance of catecholamine, which is an important parameter in human body and widely distributes in centrum nerve.

肾上腺素作为儿茶酚胺类激素的一种，是人体内一种重要的生理参数。

Based on Bezier curve continuance of first－order and second－order derivative, the characteristic vector equation of two Bezier curve is presented in point of intersection. The algorithm is not only of high accuracy with all of the interpolated points being on the curve theoretically, but also of very high speed in the real－time interpolation processes. The interpolation velocity does not change and the segment tolerance of interpolation can be control by selecting the parameter in cerement rationally every time.

为保证两段Bezier曲线在连接点处一阶导数、二阶导数连续，导出了两段Bezier曲线特征向量应满足的关系方程，Bezier插补法不仅在理论上可使所有的插补点落在曲线上，而且实时插曲补速度高，每次插补时可合理地选择参数增量，能使插补速度保证不变，也可控制弓高误差。

A method can change the state of an object parameter.

方法可以改变对象参数的状态。

Monitoring data of rock slope collapse is a sort of uncertain and incomplete information, Furthermore, it is a discontinuous deformation system, which will branch off or be in critical state with the continuous change of dominant variable parameter, the Gray theory and catastrophic theory are more effective to predict time of collapse occurrence.

由于崩塌的监测数据存在信息不完全和不确知性，同时，崩塌的发生存在有突跳性，采用灰色理论和突变理论能够有效地预测预报边坡崩塌发生的时间，为崩塌防治提供及时的决策依据。

It has a parameter that points to first character in the string that it does not recognize as part of a number.

它有一个参数，在字符串指向第一个字符，它不承认数字的一部分。

According to characteristic of model parameters, direction criterion based on model parameter identifying is proposed to decide the direction of faults.

本文提出了一种新的基于模型参数识别的快速方向元件，即将线路分别等效为R-L模型、T模型和Π模型，然后建立相应线路等效模型下区内、区外故障时的数学模型，利用最小二乘法求解模型参数—系统电阻R和系统电感L，根据得到的模型参数的特性，构造出基于模型的参数识别方向判据，从而判断出故障的方向。

The relationship between PID parameter and the root of the characteristic equation of the closed loop control system has been found out directly.

本文直接找出PID参数与闭环控制系统的特征方程的根之间的关系，只要使特征方程的根在z平面的单位圆内任意取值，然后再求出相应的PID参数，则闭环控制系统必然是稳定的。

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。

By the use of the component sandstone electric conductivity model, the effect of the pore structure characteristic parameter to cementation exponent m and saturation exponent n in the Archie formula were studied. It can be found the cementation exponent m mainly reflects the pore space size and its sizes distribution. The m is bigger, the pore space is bigger, the throat is simpler, and the reservoir is better.

通过致密砂岩电导模型分析研究致密砂岩孔隙结构特征参数对Archie公式中的胶结指数m和饱和度指数n的影响，发现岩石胶结指数m主要是岩石孔隙空间大小及其大小分布的表征，m值越大的岩石其孔隙储集空间越大，孔喉越简单，储集性能越好；反之，m值越小，岩石储集性能越差。

In view of the complexity of the function of mechanical products, the functional characteristic model and the knowledge library of function parameters were established. Through the function parameter mutation operation, then function and structure of products were modified and generated.

在对机械系统组成进行分析的基础上，建立了功能特征扩展和功能参数知识库模型，运用变功能参数操作，实现了产品功能的组合、变异和扩展，并使得产品结构相应的发生改变和重构，从而达到产品创新设计的目的。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。