查询词典 variance

In order to study the variation of the stiffness, the variance ratio of the stiffness within the same horizontal or vertical plane is computed.

为了研究该机床静刚度的变化情况，计算同一水平面或竖直面内的静刚度变化率。

To aim at parameter estimation of signal to noise ratio and high variance in low SNR based on time frequency distribution, this paper proposed a novel algorithm based on multimodal particle swarm optimization.

针对基于时频分布的参数估计存在信噪比阈值和低信噪比下方差大的问题，提出了一种基于多峰优化粒子群算法的跳频信号参数估计新算法。

In this paper we've compared several predicate of first order operators, and proposed an improved algorithm which is based on the automatic double threshold value improvement algorithm based on the maximum inter-cluster distance and intra-cluster variance ratio.

在边缘检测算法的选择上，比较了几种常用的一阶微分算子的优劣，并在Canny算子的基础上提出了基于最大类间、类内距离比值的自动双阈值改进算法。

Based on traditional method of image segmentation with the biggest variance ratio , a new method is proposed for image segmentation of front magnetic curve by taking front magnetic curve obtained from an oilfield for example.

在经典的最大方差比图像分割算法的基础上，以油田前磁曲线图像为例，提出一种新的适应于前磁曲线图像分割方法。

The test result shows that we got the optimum emulsified diesel oil of definite mixing ratio by variance analysis of power smoke and consume oil.

以发动机功率、耗油率和烟度的综合评价值为指标进行方差分析，优选最佳的乳化油配比方案。

The characteristic of engine working at different mounting way and different environment is analyzed. Selecting pump pressure, speed difference and its variance ratio as input, and current of pump power control and pressure difference control as output, fuzzy control is adopted to improve the power matching and energy saving control method.

分析了在不同安装方式和不同环境下发动机的工作特性，以液压泵的压力，转速差和转速差的变化率作为输入，泵功率控制电流和负载压差控制电流作为输出，采用模糊控制对动力系统的匹配与节能控制方法进行了优化。

The model considered availability of multiple machines of the same type, processing times and batch information, and the objective function was to minimize the statistical variance of the ratio of loading to capacity in each cell.

模型中考虑了同类设备的可重用性、工时信息和批量信息，目标函数为最小化各单元之间的负荷能力比。

The analysis results show that the relationship of the phase plate's Fourier spectral T2 and the far field distribution variance is in direct ratio.

利用数值模拟计算了随机生成的两个波前分别通过两个位相屏后的远场分布，模拟结果证实了位相屏用于随机相位畸变激光束匀滑的可行性，并显示了匀滑效果。

With the methods of unit root and variance ratio ,the closing prices of nature rubber futures contract No.

以上海期货交易所天然橡胶7月合约的每日收盘价为研究对象，采用的方法是单位根检验和方差比检验相结合，通过检验期货价格序列是否服从随机步游过程，来判断市场是否具有弱式有效性。

A new feature, the variance of low-band energy ratio, is also introduced, which produces large improvements in classification accuracy at low SNR Performance of the proposed system is evaluated for different SNR.

考察了系统在不同的信噪比环境下的分类性能。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。