谐振的

The lowest loss mode fields and the far field divergency angles of output beams of the UPCUR are calculated by use of Prony method. The relations between the mode discriminability, far field divergency angles and the parameters of the resonator are analyzed. And the theoretical results show that the output beams with diffraction limit quality can be obtained by using the UPUR with small magnification (M=1. 3), which is much better than the traditional unstable resonator under the same conditions.

采用Prony方法计算均匀相位输出耦合镜非稳腔的输出模场分布及远场方向性，分析了模式分辨率和光束远场发散角与系统各参数之间的关系，理论计算得到的结果表明，采用均匀相位输出耦合镜非稳腔，可以在小放大倍率(M=1.3)情况下得到质量达到衍射极限的输出光束，远远好于同等条件下的常规非稳腔，因此这种新型的谐振腔适用于在工业用千瓦级氧碘化学激光器。

The piezoelectric motor includes a piezoelectric member which generates a first vibration mode and a second vibration mode simultaneously by an applied power and a frictional member of which a portion is insertedly attached into a concave portion indentedly formed on one side of the piezoelectric member, wherein the frictional member is in an elliptic motion by the vibration generated by the piezoelectric member, so that an influence of the attachment of the frictional member to a resonance frequency can be minimized.

该压电电机包括：压电构件，通过施加的功率同时产生第一振动模式和第二振动模式；摩擦构件，摩擦构件的一部分插入地附着到凹入地形成在压电构件的一侧上的凹入部分中，其中，摩擦构件通过由压电构件产生的振动进行椭圆运动，从而能够使附着摩擦构件对谐振频率的影响最小化。

This course consists of three parts : A.The fundamental theory of gyroscopes. a.Kinematics and dynamics of gyroscopes, consisting of Coriolis acceleration, theorem of angular momentum, Euler's dynamical equations, dynamical explanation of gyroscopes' properties. b.Gyroscopes' motion equations, including the complete equations, technical equations and precession equations derived from Euler's dynamical equations, and the technical equations derived from static vs. dynamic method. c.Analysis of gyroscopes' motion. d.Coordinate systems and their mutual transformation. e.Gyroscope drift and its measurement. B.Principle of typical gyroscope instruments, such as gyro compass, gyro north finder, gyro horizon, platform compass, rate gyroscope and integrating gyroscope. C.Principles and applications of new-type gyroscpes, such as electrically suspended gyro, ring laser gyroscope, fiber optical gyroscope, hemispherical resonator gyro, dynamically tuned gyroscope and micro inertial sensors.

本课程教学内容由三部分组成：陀螺仪的基本理论，内容包括：陀螺力学基础（哥氏加速度、角动量定理和欧拉动力学方程、陀螺特性的力学解释）；陀螺仪运动方程和运动分析（用欧拉动力学方程建立完整方程、陀螺仪运动的技术方程和进动方程，用动静法建立技术方程）；坐标系及其变换；陀螺仪的漂移及其测试；典型陀螺仪器（包括陀螺罗经、陀螺找北仪、陀螺地平仪、平台罗经、速率陀螺仪和积分陀螺仪等）的工作原理；新型陀螺仪（包括静电陀螺仪、激光陀螺仪、光纤陀螺仪、半球谐振陀螺仪、挠性陀螺仪、微机械陀螺仪等）的原理及应用。

In this model, the Hamiltonian operator includes not only the anharmonic parameter, but also the dispersive parameters describing dipole-dipole interactions, reflecting the character of molecular stretching vibrations.

计算中引入的模型Hamilton算符所包含的描述U-F键非谐振动的参数λ和描述U-F键之间的偶极-偶极相互作用参数ε1，ε2由实验值得出，波函数|ψn〉按形式为|n，α〉=|n1〉|n2〉|n3〉|n4〉|n5〉|n6〉的基函数集展开，从而把复杂的Hamilton方程转化为简单的矩阵代数方程。

It is proved by the analytical and numerical method that the modulus of the Z transform of a finite impulse response sequence has no extreme values at poles (with maximums along imaginary axis and no extreme values along real axis), and the negative second order derivative of the modulus normalized along frequency axis with respect to angular frequency has maximums at the poles.

根据实测瞬态电磁脉冲响应，较好地反演了导体球和导体长椭球的冲激响应，测得了它们的雷达截面和谐振频率。用解析与数值相结合的方法证明了有限冲激响应序列Z变换的模在极点无极值（沿虚轴有极大值，沿实轴无极值），而沿频率轴的归一化值对角频率的负二阶导数在极点有极大值。

The amplifier itself consists of a cascade of RC neutralized common-emitter stages each with primary tuned interstage transformer.

放大器由中和了的共发射极级链接而成，级间用初级调谐的变压器耦合，叙述分三个部分：第一部分将中和了的共发射极电路用近似等效电路表示，第二部分分析级间网络，将晶体管放大器的功率增益表示成预给的频率函数后，就能导出各级间网络的谐振频率和Q值等，从而求出线路元件的数值。

For the voltage space vector close loop control-based strategy, based on the proportional-plus-integral-based control scheme, a new control scheme composed of an adaptive resonant controller and a PI controller is proposed in the paper, by which the stator voltage waving is almost elimited, and a very well control performance is achieved for stator voltages, naturally, the softly cut-in control is realized.

针对基于空间电压矢量闭环控制的这一投切方案，在PI调节器控制的基础上提出了自适应谐振调节器与PI调节器并行控制的控制策略，有效抑制了定子电压幅值的波动，使定子电压具有较好的控制响应，进而实现了双馈风力发电机零电流切入电网的目的。

Furthermore, we discuss a harmonic oscillator in noncommunicative space to support our results.

在此之后，我们又以谐振子为例，得到其在非对易情形下Wigner函数的表达式，并与以往的结果进行比较，证明了我们的结论是完全正确的。

In order to improve the power of the laser, high reflectance film is coated on the rear face of the resonant cavity.

为了获得高的增益和激光的收集利用使得阈值电流降低，提高量子效率和激光的输出功率，在谐振腔的腔面上镀制光学薄膜。

In comparison with other types of SAW actuators, the floating electrode unidirectional SAW actuator has a higher frequency vibration near to 50 MHz and more effectively controllable drive direction ability, which will be very useful for micro optical controlling systems in microminiaturization and controllability.

该声表面波驱动器比以往的驱动器具有更高的谐振频率（接近50MHz）和更有效的方向可控性，从而有助于微光学控制系统的进一步微型化和可控化。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。