This paper introduces a DDC (Direct Digital Control) temperature system.
介绍一种DDC(直接数字控制)温度系统。
A novel method of direct digital synthesizing frequency sweep signal is presented.
介绍了利用直接数字合成技术产生频率扫描信号的新方法。
An area-efficient design proposal of a direct digital frequency synthesizer is presented.
提出一种新的面积优化的直接数字频率合成器设计方案。
Direct digital frequency synthesis (DDFS) is an advanced technique for frequency synthesis.
直接数字频率合成技术(DDFS)是一种先进的频率控制技术。
Direct digital controller (DDC) is the basic control unit of building automation system (bas).
直接数字控制器(DDC)是楼宇自动化系统(BAS)的基本控制单元。
The principal conclusions have the important value for the design of direct digital relief valve.
主要结论对直接数字式溢流阀的设计具有重要的指导意义。
This paper gives the design of electronic phased focused system adopted direct digital synthesis.
本文提出了采用直接数字合成实现电子相控聚焦系统的设计。
The gyro uses J30-21ZK socket and J30-21TJ as its acquisition cable. Direct digital output, pulse.
每只陀螺均采用J30-21ZK插座，相应采集线采用J30-21TJ。直接数字输出，脉冲方式。
A design scheme is proposed for a direct digital synthesizer (DDS) used in digital video encoders.
提出了一种应用于数字视频编码器中直接数字频率合成器(DDS)的设计方案。
The double channel arbitrary wave generator based on direct digital frequency synthesis is introduced.
介绍了基于直接数字频率合成技术的双通道任意波形信号发生器。
This paper discusses the direct digital control (DDC) in the air-handing unit of air-conditioning system.
本文将讨论空调系统中空气处理机组的直接数字控制（DDC）设计。
This paper introduces a direct digital control system for position and rate based on 16 bit microprosessor.
本文介绍一种用16位单板机实现精密位置、速率的直接数字控制系统。
Objective To study the value of direct digital radiography(DDR) in diagnosis of superficial esophageal carcinoma.
目的探讨直接数字成像对表浅食管癌的诊断价值。
The design of direct digital frequency synthesizer(DDFS)in the way of local carrier demodulation is mainly introduced.
文章重点讨论了本地载波解调中的直接数字频率合成器（DDFS）模块的设计。
The realization of direct digital synthesizer (DDS) by FPGA based on the principle of fraction division is introduced.
采用现场可编程门阵列（FPGA）基于小数分频器的原理，实现直接数字式频率合成器（DDS）。
This paper introduces the application of direct digital synthesizers (DDS) technique in laser phase distance measurement.
本文介绍了直接数字合成（DDS）技术在激光相位测距仪中的应用。
Three Direct Digital Synthesis (DDS) chips, AD9832, are used in the design of a balanced coil intelligent metal detector.
在平衡线圈式智能金属探测器的设计中，使用了三片直接数字合成(DDS)芯片ad9832。
The digitized FM system is actually a Direct Digital Synthesis (DDS) system that the frequency of the output is controllable.
该方案实际上是一个输出频率受控的直接数字频率合成(DDS)系统。
Direct Digital Synthesizer (DDS) has the advantages of high frequency resolution, rapid frequency change rate and low phase noise.
直接数字频率合成器dds具有极高的分辨率、频率转换速度快、相位噪声低等优点。
The paper introduced the working principle of the direct digital frequency synthesizer (DDS) and its spurious analysis is performed.
文章介绍了直接数字频率合成器(DDS)的基本工作原理，同时对其杂散进行了分析。
Digital look up table method for synthesizing periodic signals is the most popular technique for direct digital frequency synthesis.
数字查表法合成周期信号是一种最常用的直接数字频率合成技术。
This paper introduces the principle of direct digital synthesizing signals and analyzes the frequency spectra of synthesized signals.
文中给出直接数字合成波形的基本原理，分析了合成波形的频谱。
Objective:To evaluate the value in detecting pulmonary tubercle(PT) on dual-energy subtraction(DES) with direct digital radiography (DDR).
前言： 目的：评价双能量减影在肺结核结节诊断中的应用价值。
Using DDS (Direct Digital Synthesizer) technique under control of single-chip computer, electronic-tunable wavelength scanning is realized.
系统采用计算机控制下的直接数字频率合成(DDS)技术，实现电调谐波长扫描。
Direct digital synthesis is a kind of advanced technique on frequency synthesis, in this paper, the design and realized technique of DDS is given.
直接数字合成是先进的频率合成技术，给出了直接数字合成器的设计方法和实现技术。
This paper discusses the method of Glass Furnace Forehearth Zone Temperatures and presents a direct digital computer system and hardware software.
本文讨论玻璃熔窑成型区温度控制方法，提出了计算机直接数字控制系统，给出了该系统的硬件和软件。
The direct digital frequency synthesis (DDS) is a kind of new frequency synthesis method. It has high frequency resolution, fast frequency switching speed, etc.
直接数字频率合成(DDS)是一种新的频率合成方法，具有频率分辨率高、切换速度快等优点。
AIM: to compare the performance of two exciting sources based on direct digital synthesis (DDS) technology and to present some advice for the future system design.
目的：比较两种基于直接数字合成技术的阻抗激励源的性能，为以后阻抗系统设计提供指导。
AIM: to compare the performance of two exciting sources based on direct digital synthesis (DDS) technology and to present some advice for the future system design.
目的：比较两种基于直接数字合成技术的阻抗激励源的性能，为以后阻抗系统设计提供指导。
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