正切

添加GOD的面团弹性模量增大，粘性模量和损耗角正切减小；

The dough with GOD increased the storage modulus and reduced the loss modulus and the loss tangent .

随着Fe含量增加，复介电常数和介电损耗正切值明显减小，但是复磁导率和磁损耗正切大幅增大。

With doping Fe , the permittivity and its loss tangent clearly decrease , but the permeability and its loss tangent increase evidently .

基于双曲正切误差函数常数模算法的DSP实现

Hardware Implementation for Algorithm of Constant Modulus Based on Error Function of Hyperbolic Tangent

双曲正切非线性函数和加均值量化算法对BP神经网络图像压缩处理的影响

Image Compression of BP Neural Network with Hyperbolic Tangent Non-linear Function and Adding Mean Quantization Algorithm

介电常数、介质角正切对PCB特性阻抗的影响

Angle . Dielectric 's effects for the PCB 'S characteristic impedance

研究了SiC（N）纳米粉体的介电常数和介电损耗角正切与粉体组成的关系。

The microwave permittivity of the mixture of the SiC ( N ) nano powder with paraffin wax was measured .

用DP-Ⅱ型介电谱仪进行介电性能测量，得出：共聚物母料的介电常数εr值较高，损耗角正切tanδ的α和β两个峰叠合成一个。

The dielectric properties of the sample so obtained were investigated with a DP - I dielectric spectra detector .

从功能的角度分析了广义模糊双曲正切PID控制器本质特点和控制能力的问题。

This paper analyzes the characteristics and the control capability of the PID controller based on generalized fuzzy hyperbolic model ( GFHM-PID ) deeply .

基于双曲正切函数的非线性PI控制器及其在感应电动机矢量控制中的应用

A Nonlinear PI Speed Controller Based on Hyperbolic Function and Its Application in the Vector Control of an Induction Motor

XLPE电缆绝缘介质损耗角正切测试方法的探讨

On the Measurement of Tangent of Dielectric Loss Angle in XLPE Cables

利用分形几何理论对煤的介质损失角正切的特征作了深入的探讨.结果表明，煤的介质损失角正切tgδ具有分形特征；

Characteristic on the tangent of dielectric loss angle for coal has been researched by using fractal geometry theory .

方法：利用动态学习比率BP算法以双曲正切函数为功能函数的非线性时间序列预测方法。

Method : Based on dynamic error correction BP artificial neural network with Hyperbolic Tangent function as activation function and the number of hidden node six .

正切函数的幂级数表示与Bernoulli数的恒等式

Power series expression of tangent and some identities of Bernoulli ′ s Numbers

利用该系统能快速、准确、自动地测出低、中耗介质的折射率n和损耗角正切tgδ。

By means of this system , dielectric parameters n and tg δ of medium and low loss dielectric sample can be measured rapidly , accurately and automatically .

与聚苯胺相比，镍铁氧体/聚苯胺复合材料的介电损耗角正切tanδε值与磁损耗角正切tanδm值都增大。

Dielectric loss tangent and magnetic loss tangent of the nickel ferrite / polyaniline composites are higher than those of the polyaniline .

Richardson外推法的误差小于正切法；

The error of Richardson ' extrapolation method is less than that of secant method ;

本文通过函数的正切函数变换给出Fisher方程的新孤波解。

This paper proposes a new kind of solitary wave solution to Fisher Equation through a function ′ s tangent function variation .

结果表明：木粉含量、偶联剂和双螺杆挤出机的螺杆转速都对复合材料的存储模量（E′）和损耗角正切值（tanδ）有一定影响。

The results show that the mechanical properties of composites are affected by wood flour loading , coupling agent and rotation speed of the double screws of extruder .

为了有效改善整个网络神经元的信息处理的特性，采用了双曲正切S形非线性传输函数和加均值量化算法，建立了BP神经网络图像压缩处理系统。

An image compression and transmission system of BP neural network with hyperbolic tangent non-linear function and adding mean quantization algorithm is presented to improve the information processing ability of neural network .

相应地，对表征其介电特性的参数如介电常数ε、损耗角正切tanδ等的测试技术研究也日益受到人们的重视。

Accordingly , test technology on the characterization of their dielectric property parameters such as dielectric constant , dissipation factor has also been paid increasing attention .

介质损耗角正切tgδ的测试是电气设备绝缘监督的一项重要措施.做好介质损耗的测量对于发现电气设备绝缘隐患，保证电气设备的安全运行有着重要意义。

The testing of medium wear-angle tangent tg δ is an important measure to monitor insulation of electrical machines , and also benefits the safe operation of electrical equipments .

最后利用双曲正切函数的性质和MRP自身的性质，分别设计了控制输入受限情况下的姿态调节和跟踪控制算法。

At last , by utilizing the property of hyperbolic tangent saturation function and MRP , the attitude regulation and tracking control algorithms are designed .

以相对介电常数和损耗角正切为输入特征参数，应用BP神经网络技术识别桃的新鲜度等级，平均识别率为82%。

Furthermore , BP neural network technology was used to identify freshness of peaches when relative dielectric constant and loss tangent were selected as input characteristic parameters . Results showed the average distinguishing rate was 82 % .

然后利用正切锥方向导数定义一类正切锥F凸函数类，并给出了（VP）正切锥真有效解的充分性条件；

Then , we define a class of tangent cone F convexity in terms of the tangent cone directional derivative , and prove the sufficient optimality conditions for ( VP ) .

利用改进变分法求出了正切作用量的四维SU（2）格点规范理论的元格内能和比热曲线。

By using improved variational method , the internal energy per plaquette and the specific heat curves of the Tangent action in SU ( 2 ) lattice gauge theory arc worked out .

动态力学热分析（DMTA）曲线上显示的损耗正切（tanδ）双峰进一步证实了这两种不同非晶区的存在。

The dual tan δ loss peaks in dynamic mechanical thermal analysis ( DMTA ) curves also confirmed the existence of the dual amorphous regions .

该系统可根据加载介质前后圆柱谐振腔的谐振频率和品质因数，计算出被测材料的相对介电常数εr′和损耗角正切tanδ。

According to the frequency and the quality factor of the cylindrical cavity unloaded and loaded , the system can calculate the permittivity ε′ _r and the loss angle tangent tan δ of the materials being tested .

频域结构不确定性模型有效性分析&正切结构Nevanlinna-Pick插值法

Frequency Domain Validation of Structured Uncertain Models - A Structured Tangential Nevanlinna-Pick Interpolation Approach

详细说明了利用高压西林电桥和高压标准电容器测量电力电容器的电容和介质损耗角正切（Tanδ）的原理；扩大量程的途径及注意事项；

The measurement principle for the capacitance and loss angle tangent of dielectric ( Tan δ) of power capacitor used by a high-voltage SCHERING bridge and a high-voltage standard capacitor are introduced in detail .

在低温段（-10~40℃），随着老化时间的增加，损耗角正切tanδ值有明显下降，β松弛峰也越来越明显。

In the range of low temperature ( - 10 ~ 40 ℃), the values of tan δ obviously decrease and the peaks of β relaxation become more clear with increase of aging time .