通过应用各种编码技术,字位的组合不但可以用来表示二进制数,还可以表示其他离散符号,比如十进制数字和字母表上的字母等。
By using various coding techniques, group of bits can be made to represent not only binary number but also other discrete symbols, such as decimal digits or letter of alphabet.
研究表明,低马赫数情况下叶轮离散噪声主要是由脉动力造成,为降低低马赫数下的叶轮离散噪声提供了参考。
Results show that under small Mach number the main source of discrete noise is the fluctuating force, which gives a guide for cutting discrete noise down.
针对齿数、模数的规范性和离散性要求,进行了相应的离散优化处理。
To satisfy the requirement of the standardization of serrate number and module of gear, the corresponding discrete optimization is provided.
对低马赫数叶轮离散噪声的机理及计算方法进行了研究,并推导了离散噪声的声压计算式、低马赫数下近似计算式和轴心线上的计算式,还实验验证了计算模型。
Research is carried out on the discrete noise theory and calculation method, the calculation model of discrete noise and the approximate formula under small Mach number are verified by experiments.
这些方法,仅对地基-基础界面进行有限元离散,使问题的空间维数减少一维;
Only the subsoil-foundation boundary is discretized, the same as boundary element method, which reduces the spatial dimension by one.
介绍一种快速识别离散系统阶数的方法。
A method for rapidly identifying the orders of discrete system is given.
边界单元法降低了求解空间的维数,减少了离散线性方程组的阶数,输入数据比较少,而工作效率高。
This method reduces the number of space dimension, makes the equation system lower order, less data input and higher efficiency .
在集中介绍离散涡方法的概念后,提出在高雷诺数流动情况下的一种简化流动模型—基于奇点法的离散涡模型。
After concentrated introduction of the conception of DVM, a simplified numerical model is proposed under high Renold number which is a DVM model combined singularity method.
针对时滞、阶数和系数皆未知的离散时间线性随机控制系统(ARMAX模型),提出一种对时滞、阶数和系数同时进行递推估计的算法。
This paper proposes a new recursive estimate algorithm for unknown time-delay, orders and coefficients of linear discrete-time stochastic control systems (ARMAX model).
步骤2,对取样的数 据进行正向离散余弦转换;
Step 2, forward discrete cosine transform is carried out to sampled data;
MDP作为一个复杂的离散事件系统,尤其是对于存在“维数灾”和“模型灾”问题的系统,其管理与控制问题难以用一般的常规方法来解决。
As a complex DEDS, there usually exists especially the curse of dimensionality and the curse of model, the problems of MDP's management and control can not be solved by regular methods.
作者详细分析了显、隐格式的CFL数后,指出影响CFL数大小的关键原因在于离散方式。
After a detailed analysis of the CFL number of explicit and implicit scheme it is noted that the key factor influencing the magnitude of CFL lies in a discrete form.
得到一类高维混合问题解的唯一性有离散现象,并与此问题的一维情况下解唯一性的离散值做了比较,得到了不同之处,说明维数对离散值有一定的影响。
The discrete phenomena of uniqueness on a class of mixed problem is discussed, and we prove there is discrete phenomena, and it is related to every coefficient of the equation.
为了符合应用,关于时间的模型从离散的自然数和整数,延伸到稠密的线性实数,甚至扩展到区间代数和树代数。
The underlying model of time appropriate to the application can range from discrete natural numbers and integers to dense linear real numbers or to algebras of intervals and trees.
基于混沌的随机数发生器采用了离散时问的决定论混沌系统。
A deterministic chaotic discrete time dynamical system can be used for random number generator (RNG).
边界元法具有计算精度高,离散节点少,降低问题维数的优点。
The boundary element methods have the advantages of accuracy, less meshes and reducing dimension.
边界元法具有计算精度高,离散节点少,降低问题维数的优点。
The boundary element methods have the advantages of accuracy, less meshes and reducing dimension.
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