The reflected electrons of a loss-cone distribution can drive the electron cyclotron maser instability when a nonlinear density wave travells through the bottom part of the magnetic loop . The maser instability will excite the second harmonic O-mode and X-mode to dominate the solar radio millisecond spike radiation .

在磁拱底部非线性等离子体密度 波传播期间，损失锥分布的反射电子驱动着电子回旋 maser不稳定性的增长，激励出二次谐频波模，支配着太阳射电毫秒Spike辐射。

Wave analysis of main loop of synchronous generator SCR exciting system in fault state ;

发电机 励磁系统对电力 系统 的 电压 控制 和 稳定 控制具有重要 作用。

Then the obtained energy spectrum of the generated torsional Alfven wave is considered as boundary condition of coronal loop to calculate the subsequent wave dissipation .

将计算得到的激发扭转Alfven能谱做为边界条件代入，可以对扭转Alfven 波在冕 环中的耗散做一些定量的分析。

Through the relationship between the positive and negative work of tension and direction of energy flow proves that the energy in the mechanic standing wave is not static but flowing periodically to and fro between wave loop and wave node .

通过张力作功的正负值与能流方向间的关系，证明驻波中的能量并非静止不动，而是在 波腹与波节问作周期性的往复流动。

The feedbacks signal regulation sinusoidal wave generator and phase-lock loop were realized by digital control while self-tuning of PID parameter was implemented to attenuate influence in the presence of load variation .

介绍了输出反馈信号处理、 正弦波 信号发生与控制以及锁相 环在数字控制中的实现方法，并采用PID参数自调整控制算法来抑制负载变化对逆变电源输出的影响。

Mathematical description of torsional Alfven wave resonance in coronal loop

扭转 Alfvén 波共振的数学描述

It uses 100kHz ~ 3MHz electromagnetic wave and forms a loop circuit with a electrode . IN extension of radio frequency field it forms distribution of temperature and realizes the therapy aim .

它利用频率为100KHz～ 3MHz的射频电磁 波在穿透范围内形成温度场分布，从而产生热效应的原理来实现治疗目的。

The author analyses the principle for creating harmonic wave signals types of control for loop interference signals and anti-interference technology and gives practical solutions with samples which is identified to be significant to the application of frequency converters .

通过对变频器产生 谐波信号的机理、控制 回路干扰信号的类型及抗干扰技术的分析，结合实例给出了相应的实际解决办法，对变频器的应用有一定指导意义。

This kind of methods is also called as undulation forecast subtracting which including wave field extrapolated method feedback loop method and backscattering progression method .

这类方法也称为波动预测减去法，主要有： 波场外推法、反馈 环法、反散射级数法。

An analysis of arc wave shape and low flat wave shape of the admittance differential loop and power spectral of cephalogram

脑导纳微分 环及功率谱对弧形波和低平 波的分析

By analysis to wave form of whole circuit and test to inner loop of electric speed-regulating system constituted by angular displacement electromagnetic actuator and angular displacement sensor the control circuit proves to be excellent in speed-regulating and controlling performance .

通过对整个电路 波形分析及与以角位移式电磁执行器和角位移传感器构成电子调速器系统的 内环进行实验，证明该电路有良好的调速机控制性能。

The quality of sine wave can be guaranteed by the instantaneous voltage value inner loop and the output sine wave value can be controlled by the mean voltage value outer loop .

电压瞬时值 内环保证输出电压 波形的正弦度，平均值外环实现对输出电压幅值的控制。

Compensatory current control adopts triangle wave compare control and DC voltage control adopts PI closed loop control .

补偿电流跟踪控制选用三角 波比较控制法，并采用带电压前馈控制的比例调节 闭环控制。

The geoelectric prospecting with dual-frequency combinatorial electromagnetic wave in near-field zone of current loop

近区大 回线双频组合电磁 波地电探测

Designed the open loop driving circuit using sine wave plus DC component . On the basis of open loop driving circuit discussed the closed-loop driving circuit using PLL .

设计了采用 正弦波加直流分量的开环驱动电路，在开 环驱动的基础上，重点探讨了采用文氏电桥的闭环驱动电路设计。

The Application of Digital Filtering in Radio Carrier Wave Tracking Loop

数字滤波在无线电 载波跟踪 环中的应用

In this paper we are going to use high speed digital signal processor track the carrier wave through the digital phase locked loop and so to demodulate the modulating signal .

而我们这里就是准备用高速数字信号处理器，利用数字锁相 环 实现对 载波的跟踪，从而实现调制信号的解调，它能有效克服其他解调方式所遇到的困难。

This paper adopts the triangle wave comparison control built mathematical model of the current closed loop control system .

本文采用三角 波比较控制，建立了电流 闭环控制系统的数学模型。

A High Frequency Sine Wave Signal Generator with High Stability Based on Phaselocked Loop

基于锁相 环的高稳定高频 正弦信号发生器

Influence of optical fiber wave plates on linear transmission characteristics of optical fiber loop mirror

光纤 波片对光纤 环形镜线性传输特性的影响

According to the theory of negative wave the current examination loop pipe was transformed . The experiment equipment of pipe 's leak detection based on negative wave was rebuilt which composed of examination loop pipe signal detection system and assistant system .

依据负压 波 法的基本理论，对现有实验 环道进行改造，组建基于负压波的管道泄漏检测实验装置，该实验装置由试验环道、信号检测系统和辅助系统组成。

By using stress birefringence effect on single-mode fiber and by using on-line optical fiber wave plates introduced into linear optical fiber loop mirror real-time adjustment of transmissivity and reflectivity can be obtained by changing the principal axes of the fiber wave plates .

利用单模光纤应力双折射率效应，在线性光纤 环形镜中引入在线光纤 波片，通过改变光纤波片主轴方向，可以实现对线性光纤环形镜透过率和反射率的实时调节。

The second part of our work is devoted to the dissipation mechanism of Alfven wave in coronal loop .

第二个方面是研究冕 环中的Alfven 波耗散机制。

A sinusoidal was used as a bias phase modulation wave and the open loop demodulation used the weak signal detection technique .

在方案中，以 正弦波信号作为 相位偏置信号，相位解调运用了同步相关检测的方法。

A servomotor was used to drive the vehicle . The PWM wave speed-adjust circuit of servomotor was designed and the close loop control of welding speed was realized .

本文设计采用伺服电机驱动焊接小车的行驶，设计了伺服电机的 脉冲宽度调速控制电路，实现了对焊接速度的 闭环控制。

Equivalent Model of Electromagnetic Wave Radiated from Corona Discharge between Needle-Plate Electrodes in Loop Circuit

针&板电极 电晕放电辐射电磁 波的等效模型双极集成电路单元隔离

Through experiment and theory we can conclude that electromagnetic wave radiated from spark discharge of a closed loop is radiated by equivalent dipole antenna and with the difference of ratio of wavelength to girth the characteristic of electromagnetic wave is also different .

通过实验和理论分析，我们认为，针板放电 回路可以由一个振子天线来等效，并且随着辐射电磁 波的波长与环形 回路周长的比值不同，电磁波的特性也有所不同。

Wave Function in One - loop Quantum Cosmology

量子宇宙 波函数的单 圈修正