瞬态

MATLAB language is used to develop the computer simulation program by means of the dynamic mathematical model of three - phase induction motors in phase quantities, The program is applied to series asymmetrical resistance starting operation process of three - phase cage - type induction motors in one phases or two phases of the stator circuit.

为了得到起动特性，根据三相异步电动机在相坐标系下的瞬态数学模型，编写计算机仿真程序，通过实例对三相笼型异步电动机的定子电路一相串联电阻以及两相串联电阻时的起动过程进行仿真计算，对仿真结果进行比较分析；用对称分量法分析定子电路一相串联电阻以及两相串联电阻时的不对称系统，初步计算起动电阻的数值，然后通过计算机仿真的调整来较准确地加以确定。

An on-line blind source separation algorithm of non-stationary mixed signals is presented. The algorithm uses the multiple time-delayed decorrelation and natural gradient rule to obtain the stationary point of the cost function, only a small number of observed samples is needed to minimize the Frobenius norm of the correlation matrices, so the computing cost is low and continuous separation calculation could be realized by on-line operation.

利用一种基于多时延解相关准则的代价函数和自然梯度原则，分别推导出非平稳信号在瞬态线性混合及卷积混合情况下的在线盲分离算法，仅通过对有限个时延样本的相关矩阵进行Frobenius范数最小化运算得到分离矩阵，计算工作量小，无需对样本进行分块处理，可实现对信号的连续跟踪操作。

The photophysical properties of PyTS have been studied by steady state absorption, fluorescence emission and time resolved transient absorption spectroscopies.

本文利用吸收光谱、荧光光谱以及时间分辨瞬态吸收光谱研究芘四磺酸四钠盐的光物理特性。

In this paper finite element model was established, transient work condition of wave-proof plate of transportation tank in full load was analyzed in brake condition, the maximum stress map and amplitude diagram in maximal deforming point were plotted. According to the change of the transport medium, the results in variant thickness of wave-proof plate were compared and analyzed.

建立了运输槽罐制动时的有限元模型，并且对制动条件下的满载罐体的防浪板进行了瞬态仿真分析，绘出了制动时防浪板的最大应力图和变形最大点的幅值图，将不同厚度的防浪板按照运输介质的变化得出的不同结果，进行了分析比较。

In quantitatively analysis including process of loading and stress distribution along the body of a chimney, load of blasting vibration induced by the forming of blasting cut was analyzed and the premature rupture of upper chimney was certainly affected by it.

将ANSYS5.7瞬态动力学分析引入爆破动力计算中，定量分析研究了在切口形成时的爆破振动荷载下，整体结构受力过程及应力分布规律。

Computer micro-vision, Mirau microscopic interferometry, stroboscopic photography and laser Doppler vibrator are integrated into this platform. In-plane and out-of-plane periodic motion characteristics of micro-resonator are measured, and out-of-plane transient motion of micro-mirror is analyzed. In-plane displacement, motion phase and resonance frequency can be measured by integrating computer micro-vision with stroboscopic photography, and the repeatable accuracy of in-plane displacement is 30 nm.

实验结果表明，利用计算机微视觉和频闪成像技术能够实现微结构的平面位移、运动相位及谐振频率等周期运动参量的测试，位移的重复精度为30 nm；利用显微干涉和频闪成像技术可实现微结构的离面位移及表面扭曲等周期运动参量的测试，位移的重复精度为3 nm；激光多普勒测振技术具有在频域上对微结构瞬态运动进行分析的优点，是时域上周期运动测试的重要补充。

Therefore,cure kinetic model can present a necessary submodel for simulating transient temperature field of composite pressure vessel.

因此，可为复合材料压力容器固化成型过程中瞬态温度场的模拟提供必要子模型。

The instant hammering method to measure the density of silt or sand subsoil is a new research subject.

利用瞬态锤击法来测定粉砂土的密实度是一项新课题。

The non-Linearity of extraneous forces and structures as Well as instant effect of wave surface are considered in analysis.

分析中考虑了外力，结构的非线性和波面的瞬态效应，认为极值分布的形式以本文提出的类Gumbel为较好。

The numerical results revealed the following phenomena: For the linear sweep voltage, the field-enhanced effect retards the progress of the MOS capacitance, and the lower voltage sweep rate, the larger influence of fieldenhanced effect.

数值分析首次揭示了下述现象：对于线性电压扫描作用下MOS结构的电容瞬态特性：电场增强产生效应阻碍着MOS结构电容的下降，这种作用在较低的电压扫描率下更明显。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐