Frequency modulated laser diode

The research of frequency modulation system of the medium frequency generator;

中频发电机调频系统研究

Research on continuous frequency modulation of semiconductor laser by varying the length of external cavity;

半导体激光器外腔长连续调频特性的研究

Research on Rotor-bearings System Nonlinear Dynamics Behaviors, Fluid-solid Interaction and Its Frequency Modulations;

轴承—转子系统非线性动力学行为及其耦合调频技术研究

Simulation and Analysis of Nonlinear FM Output Function of AD9854;

AD9854非线性调频输出功能的仿真与分析

The Development of FM Transmitter Based on PLL;

锁相环调频发射机的研制

A low frequency high power FM scanning acoustic beam transmitting system;

一种低频大功率调频声波束扫描发射系统

Electromagnetic Oven Control System Based on the Frequency Regulation Mode;

基于调频方式电磁炉的控制系统

The frequency regulation has been modified;The "press deviation dragging load"loop has been designed in order to limit the response speed of turbine valve;The direct Energy Balance(DEB) strategy has been replaced by Indirect Energy Balance(IEB) strategy;Fuel feedforward has been used to compensate the time delay of the CFB boiler.

在分析河北省保定热电厂原协调控制策略的基础上提出了改进措施:完善了一次调频功能;设计了汽机侧的“压力偏差回拉功率”回路,以限制汽机侧调门的动作速率;将直接能量平衡策略改为间接能量平衡策略;为克服锅炉燃料调节的滞后性使用了燃料前馈。

When the generator primary frequency regulation of system is at low level,severe accident may cause power system collapse if it is not treated properly and timely.

当系统发电机整体一次调频(PFR)水平较低时,如遭遇严重事故而不及时进行控制,将导致频率崩溃、系统瓦解。

The amplitude modula- tion screening,frequency modulation screening,and hybrid screening technologies were introduced through comparing and analyzing advantage and disadvantage of different screening technologies.

简要介绍了调幅加网、调频加网和混合加网技术,比较分析了不同加网技术的特点,分析了传统柔性版印刷加网工艺的不足,介绍了现代柔性版加网新技术并指出在应用中存在的问题,对柔印加网新技术进行了展望。

The research of digital screening technology on the existing conditions in recent years was summarized including amplitude modulation screening,frequency modulation screening,and hybrid screening.

介绍了数字加网技术的研究现状,阐述了数字调幅和调频加网以及混合加网的原理及算法,并对其特点进行了分析。

Densitometers were not able to read the FM screening reliably,therefore we can not use the traditional Murray-Davies model of density on FM halftoning.

调频加网印刷存在密度计无法测出可靠的调频加网光学密度的问题,使传统的有效网点面积率计算公式(Murray-Davies公式)对于调频加网工艺不再适用。

Color conversion model of FM halftoning was established.

主要研究建立调频加网工艺条件下的三色呈色数学模型,也就是建立调频加网工艺的色彩转换模型。