查询词典 arithmetic difference

This paper proposed to use elliptical Gabor filter with least redundancy to convolute with palmprint,sub-bands with 4 scales and 6 directions are obtained,calculate the average and deviation of every sub-band,48D texture feature is extracted,and normalize the 48D feature in the whole database,finally use distance of absolute value to measure the difference between two feature vector.The result shows the arithmetic proposed by this paper has a little high retrieval accuracy.

本文采用最小冗余度的椭圆Gabor滤波器组对掌纹图像滤波，得到4个尺度6个方向的子带，计算每个子带的均值与方差，得到48维的纹理特征，在整个数据库中对48维特征进行归一化，最后采用绝对值距离衡量不同特征向量间的差异。

METHODS: Arithmetic mean and constituent ratio etc were used as indices to describe the current level of drug expense, and Mann - Whitney test and multivariate linear regression model were applied to compare the difference in drug expense between inpatients with and those without medical insurance.

以算术平均数和构成比等指标描述急性阑尾炎患者的药品费用水平，利用秩和检验与多元线性回归模型等方法比较"医保"患者和自费患者的药品费用。

To reduce the operation time and to improve the response characteristic of the sensor, a method of converting difference equation to recursive arithmetic was adopted.

为了减小运算时间，改善传感器的响应特性，给出了一种将滤波器的差分方程变成递推运算的方法。

Based on the Sum of Eight Adjacent Points Square Difference Operator and Varying Step Search Arithmetic, A set of autofucos system has been designed and realized in this thesis.

在自动测量系统的开发过程中，提出了叛定图像清晰度的八邻点平方差之和算子与变步距遍历搜索算法，在实际应用中达到了较好的效果。

In this paper, a method based on finite-difference time-domain arithmetic is used to analyze the dispersive characteristic of PS.

这种算法在继承普通FDTD算法的优越性的同时，由于周期边界条件的引入，使得计算效率大为提高。

On the aspect of error compensation, the system using the geometric average sound pressure instead of the arithmetic average sound pressure to get the sound pressure of the measurement point. This method not only reduces the high frequency error in the sound intensity measurement, which compensates the finite difference approximation error, but also greatly reduces the computation of the sound pressure spectrum.

误差补偿方面，课题采用几何平均声压代替通常的算术平均声压来计算双传声器法的声场声压值，这样不仅可以有效的减少声强测量中的高频误差，对有限差分误差起到了补偿作用，而且还大大减小了声压谱计算中的计算量。

Numerical analysis was made on magnetic field distribution in working area of magnetic abrasive finishing by the finite difference method,and a kind of arithmetic to calculate the isodynamic was put forward.

利用有限差分的方法对磁极开槽情况下磁力研磨加工区域中的磁场分布进行了数值分析，提出了一种等磁位线的计算绘制算法，得到了加工区域磁场分布的等磁位线图。

For more and more people buy houses and cars on mortgage loan in modern society,we build the mathematical models of average monthly installment and average degressive corpus installment by using dynamic system model and the first order linear difference equation ,and with the real example to show its usage in our life,meanwhile it giving us the reasons of differences between this two arithmetic.

针对当前社会上流行的按揭贷款买房、购车等现象，利用动力系统模型与一阶线性差分方程，分别建立了月均等额还款与等额本金递减还款法的数学模型，并结合实例说明其在经济生活中的具体运用，同时还给出了两种算法所产生差额的原因所在。

D Whyte, in his "analysis Easy"(analyticem is Inartem agoge,1591) works, the first systematic use of symbols of unknown value calculation, Operators made with a number of symbols of the difference between the provisions of the algebra and arithmetic boundaries.

韦达在他的《分析方法入门》（Inartem analyticem isagoge，1591）著作中，首次系统地使用了符号表示未知量的值进行运算，提出符号运算与数的区别，规定了代数与算术的分界。

On the aspect of ultrasonic wave Transmit and Receive, we use two probes to realize the switching between transmitting and receiving mode; we also adopted a transmitted scheme based on intermissive multi-pulse, which develops the Time Difference with Interpolation, uses digital filter to adjust the waveform, and calculates the Time Delay with Correlation Arithmetic.

在超声波发射和接收方面，系统采用了两个探头进行发射和接收的切换，并采用了一种间隙式多脉冲发射方案；接收并采集数据后利用软件插值来提高时间分辨率，再用数字滤波来调整波形，最后用相关算法进行数据的相关运算，从而计算出时延得到流速。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。