查询词典 pre-eruptive phase

Pole-placement and Inner model tuning methods are discussed finally;(2) For the linear derivative action, several different tracker-differentiators are presented to improve the quality of the derivative signals;(3) A neural network tuning method is given for the nonlinear PID controller which includes the above tracker-differentiator;(4) For the linear integral action, a nonlinear pre-phase integrator is studied in order to decrease the phase delay problem; Simulation results show that the nonlinear PID controller including the pre-phase integrator posseses better performance in both fast and stable property, and strong ability of anti-disturbance;(5) A simple optimal criteria is introduced to optimize the parameters of the nonlinear PID controller based on the pre-phase integrator.

仿真研究表明，由此形成的非线性复合积分PID控制系统，具有快速而平稳的过渡过程和超强的干扰抑制能力；(5)采用物理意义简单明确的目标函数的优化设计方法，对上述非线性PID控制器进行参数整定，达到了满意控制典型工业过程的目的。通过对直线电机伺服系统的仿真研究，表明该种非线性控制器具有同时跟踪多个目标的优越性能。

It employs the complex-valued step function to build neural model, then constructs network structure and decides the number of neurons; it adopts complex-valued Hebbian rules and inner product way to calculate the net weight matrix; then it analyzes the convergence of the network by taking advantage of the definition of energy function. In the image pre-processing stage, 2-dimensional Fourier Transform and Euler's formula are used, respectively, to transfer a gray-scaled image into phase information needed by the complex-valued neural network when stores the traffic sign. In the image post-processing stage, phase inverse transformation is used to change the phase image to gray-scaled image.

采用复数阶跃函数构建了神经元模型，建立了复数Hopfield神经网络结构，并且确定了网络中神经元的个数；借助复数Hebbian学习规则和复数内积法给出了网络权值的确定方法；借用复数网络能量函数的定义，说明了复数识别网络的收敛性；在前期的图像数据处理部分，分别使用离散二维傅里叶变换和欧拉公式，给出了将灰度图像数据转化为复数网络所需要的相位信息的方法，实现了网络对路牌的记忆存储；在后期的图像还原部分利用相位逆变换的方法，实现了相位图到灰度图转化。

Pre-Sinian of Huabei Platform was in the phase of geosyncline development and became stabilized in Sinian, then turned to platform development phase.

华北地台前震旦纪为地槽发展阶段，震旦纪开始稳定，并转向地台发育阶段。

In the method of the invention, a baseband signal is pre-processed to realize nonlinearity compensation. The pre-processing method comprises the following steps: the filter coefficient and the multinomial coefficient of the high power amplifier are extracted; corresponding gain is calculated for the amplitude value of each point input into the sequence of the baseband signal, and the phase compensation value is calculated according to the amplitude gain; the phase compensation value and the gain which are corresponding to each point are synthesized into re-gain, a pre-processing value pi is obtained, and pre-processing output sequence is formed; the pre-processing output sequence is output into the high power amplifier directly or through a inverse filter.

本发明方法是将基带信号进行预处理来实现抵偿非线性，预处理方法是：提取出高功率放大器的滤波器系数和多项式系数；对输入基带信号序列中的每一点的幅值计算对应的增益，根据幅度增益计算出相位补偿值；每一个点对应的相位补偿值与增益合成复增益，得到预处理值p i ，构成了预处理输出序列；将预处理输出序列直接或经过反向滤波器后输出到高功率放大器中。

But now mostly weeks calculated, pre-production phase for the first 40 weeks.

但现在多以周数计算，预产期为第40周。

We use Bond Elute C18 solid-phase extraction cartridge, the hope was isolated from the urine of rabbits administered the pre-contracting out of aconitine aconitine times the original base Aconine and alkali Benzoylaconine other metabolites, the methanol elution phase, but it does not Er Shi found that the chemical is expected to experiment an impasse.

我们利用Bond Elute C18固相萃取分离小柱，希望从给药家兔尿液中分离出预判的乌头原碱Aconine和乌头次碱Benzoylaconine等代谢产物时，甲醇洗脱相中却并没有发现预期的化学物质而使实验陷入了僵局。

Recently the roadway engineering byelaws has already been carried out in our country, the execution instance for which is also been checked in the design phase. So establishing design check institute that auditing design files termly is a tarnal important phase in the pre-jobs of the project.

最近，我国《工程建设标准强制性条文》已颁布实施，设计验算阶段对工程设计的强制性条文执行情况也要进行必要的复核和审查。

In the pre-engineering phase a safety programme, a safety and HF philosophy and an HF specification were written.

在前工程学中逐步运行安全节目，一种安全和 HF 哲学和一件 HF 规格被写。

Department supervisors have the following responsibility: 'Each department supervisor shall during the pre-engineering phase make an assessment of HF considerations within his area of responsibility.

部门管理者有下列各项职责：每个部门管理者在前工程时期期间将在他的职责区域里面制造 HF 考虑的一个评估的'。

As can calculate the size of the fetal sac and fetal head to the hip length, and the parietal bone on both sides of the fetal head between the diameter values, whereby the value you can calculate the number of weeks of pregnancy and pre-production phase.

由于可计算出胎囊大小与胎儿头至臀部的长度，以及胎头两侧顶骨间径数值，据此值即可推算出怀孕周数与预产期。

This paper discusses design and realizable methods of remote test output interface from logical design angle.

本文从逻辑设计的角度讨论遥测输出接口的设计及实现方法。

This also 星体投射plies to buildings, structures and geological features.

这也适用于建筑物和地质特征。