查询词典 approximate calculation

The above mentioned calculation methods is to put alphabetic string into sections by means of a certain characteristic characters or character serials, and then match every subsection respectively, whose computational quantity is approximate to O.

本发明所描述的算法是对字符串先按某种特征字符或字符序列进行分段，然后分别匹配各个子段，运算量近似于O，从而大大降低了运算的复杂度，提高了运算速度。

In light of the practical needs of production and practical experience,an approximate mass calculation is offered under the above measuring conditions.

根据生产实际需要和实践经验，提出了在以上测量条件下的一种近似质量计算法，用该法对液化石油气的质量进行计算，精度可以满足液化石油气交接计量的要求。

The approximate method for strength calculation by using the convex nature of failure surfaces.

利用破坏曲面的凸性的承载力近似计算。

Based on force characters of the model, authors put forward the mathematical expression of approximate deformation curves and compared calculation curves with measured curves.

基于模型的受力特点，提出了近似变形曲线的数学表达式，并将计算曲线与试验观测曲线进行了比较。

But there is no approximate method for calculation minor loss coefficient of the spray nozzle available till now.

结合二期工程需要，通过喷头物理模型试验，研究流量、喷口射流角度和喷口孔数等因素对喷头局部阻力系数的影响。

Random fuzzy optimal design ; multiple random fuzzy factor ; approximate measurement ; practical calculation.

随机模糊优化设计；多随机模糊因素；近似测度度量；实用计算

Combining the definition of CWT and the derivative property of convolution, we constructed a general method to calculate the approximate derivative of signal through CWT by using the first and second derivative of Gaussian function, Haar, and the first derivative of three-order-Spline function as wavelets. As compared with the other approaches of calculating derivative, which include the numerical differentiation, polynomial filters, Fourier transform, and the recently proposed DWT method, fast calculation and simple mathematical operation were remarkable advantages of CWT method. For the signal corrupted by severe noise (Signal-toNoise Ratio=5), the satisfactory results could also obtained via CWT method through appropriately adiusting the dilations.

在此基础上，(1)结合连续小波变换的特点和卷积的微分性质，提出了使用Gaussian函数的一阶和二阶导数，Haar和三次样条函数的一阶导数作为小波函数的连续小波变换计算信号近似导数的一般性方法，与其他导数计算方法(包括数字微分法，多项式滤波法，Fourier变换法和离散小波变换法)相比，本法简单便捷，计算速度快，对于噪声含量较高的信号(S/N为5)，只要适当调节尺度即可获得比较满意的结果。

Imagine that you would like to implement the hypothetical fubar statistic, and that you know two ways to calculate fubar on a bunch of samples: an accurate but slow calculation and an approximate but fast calculation.

想象一下你要实现假设的 fubar 统计，你知道两种方法来计算一组样本的 fubar：一种方法精确但计算速度慢，另一种方法近似但计算速度快。

In order to calculation Lyapunov exponent spectrum of unknown system,firstly,reconstruct phase space of observed one-dimensional time series,secondly,use Least-Squared Support Vector Machine approximate dynamical equation of reconstruction system and calculation Lyapunov exponent spectrum by Jacobian matrix.

为了计算未知系统的Lyapunov指数谱，首先，对一维观测数据序列进行相空间重构，然后，利用最小二乘支持向量机逼近重构系统的动力学方程，再通过雅克比矩阵计算Lyapunov指数谱。

On the basis of analyzing the blasting characteristics of rock at bench slope in open-air blasting,this paper puts forward a calculation model of front-row burden,and deduces an approximate formula for calculation of reasonable front-row burden length for open-bench blasting ,which can be used as reference for blasting design.

在分析露天台阶爆破时台阶坡面岩石爆破特点的基础上，提出了台阶爆破前排抵抗线长度计算模型，从而推导出计算合理前排抵抗线长度的近似公式，可供爆破设计时参考。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。