绝对值

Deletion of C2 removes the averaging function and provides a precision full-wave rectifier, and deletion of C1 provides an absolute value generator.

如果去掉 C2，电路就不再具有平均值滤波功能，只是一个精密全波整流器，如果去掉 C1，电路就变成求绝对值的电路。

Four different methods,including support vector machine,artificial neural network,multiple regression analysis and parameter product decision,were applied to the gassiness evaluation of forty gas-bearing layers in the tight sandstones of Tabamiao Area in Ordos Basin.

将支持向量机、人工神经网络、多元回归分析及参数乘积判别法4种算法分别应用于鄂尔多斯盆地塔巴庙地区40个致密砂岩储层的含气性评价，其预测结果与试气结果的平均相对误差绝对值分别为：0，4。

Note that the constants are entered as absolute values, while the hydrogen ion concentration is a relative value.

注意常数被输入作为绝对值，当氢离子集中是一个相对值。

The predicted impoverishment is small (0.1% to 0.3% of GDP).

且预测的略穷绝对值很小（仅占GDP的0.1%至0.3%）。

Then, incomplete beta function is applied to enhance the image′s global contrast in the low frequency subband, and nonlinear gain function is used to process the coefficients at each scale in the directional bandpass subbands respectively, which suppresses small coefficients and enhances big coefficients by threshold denoising method.

引入非完全贝塔函数对低频子带系数进行处理，提升图像整体对比度；采用非线性增益函数对各带通方向子带系数进行处理，通过估计噪声水平设定阈值，抑制绝对值小于阈值的系数，增强大于阈值的系数。

The relationship between the instantaneous value of measured current and the temperature rise was deduced,and the mathematical model of the current transformer was established.

论文中推导了被测电流瞬时值与温升的关系，得到光纤电流互感器的数学模型，利用这一模型，理论上证明了传感器温度输出能准确跟随电流瞬时幅值的变化，量值上有确定关系，能够用来测量电流瞬时值的绝对值。

Results: Digital quantitative EEG, some absolute, relative, monopolar mean frequency of kinesthesia and kinesthetic perception area FP2, F6, C4, F8, T6 were lower than the value of corresponding hemishere within delta, theta, alpha, beta band.

结果：数字量化头皮脑电位中FP2，F6，C4，F8等脑区的绝对值，相对值和运动觉与运动知觉电位在δ，θ，α，β，4个频带比相对应脑区各项值低。

The Mahler measure of a polynomial P is the absolute value of the product of all roots of P that have modulus at least 1 multiplied by the leading coefficient.

中文摘要：多项式的Mahler测度指的是它的所有模大于1的根与其首项系数的乘积的绝对值。

Many financial time series have a number of characteristics in common. Firstly, the logarithmic return series usually show no or little autocorrelation, whereas the squared values or absolute values of the series have high autocorrelation.

首先，收益序列没有明显的自相关性，但其平方或绝对值却高度自相关，序列的波动呈聚集性。

The LMD algorithm uses extrema to define the local mean and envelope, then to smooth the mean and envelope. To decrease errors in the smoothing process by using moving averaging, a new local mean and envelope definition method (the spline-based LMD) is proposed. The upper envelope and the lower envelope are obtained by connecting the local maxima and the local minima using a cubic spline line. The local mean is defined as a mean of the upper envelope and the lower envelope. A nonlinear simulation signal and a practical vibration signal are decomposed by the LMD and the spline-based LMD.

LMD算法用极值点来定义局部均值函数和局域包络函数，然后用滑动平均来平滑均值和包络函数，针对用滑动平均平滑均值和包络函数误差较大的缺点，提出了采用三次样条对上、下极值点分别插值求得上下包络线，然后由上下包络线的平均获得局部平均函数，由上下包络线相减的绝对值获得局部包络的方法。

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。