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- RF direct digitalization 射频直接数字化
- The RF down converter used with the direct digital synthesizer uncouples tuning speed from phase noise creating the fastest and highest performance tuner on the market. 由于采用了直接数字合成去耦调谐速度的射频下变频，避免了相位噪声，也创造了市场上最快的速度和最高的性能。
- The propagation at low altitudes and the ADC noise in the RF direct sampling system taken are considered,and the main factors which affect the coverage of low altitude detection is analyzed. 考虑低空传播以及直接采样系统中ADC器件的噪声,分析了低空探测时影响观测范围的主要因素。
- Electricity control technique developed from the relay system to the direct digit control( DDC) system the disperse control system( DCS) to the fieldbus control system ( FCS). 电气控制从继电器控制系统发展到直接数字控制(DDC)系统、集散控制系统(DCS)到目前的现场总线控制系统(FCS)。
- Use method (1) named "the programmable trapping wave", which is merged with frequency spectrum convert in linear ,Direct Digit Synthesizer and Surface Acoustic Wave Filter, to open a communication band in jam-band willfully. 使用融合了线性频谱搬移技术、数字频率合成技术以及声表面波滤波技术的“可编程陷波法”，在干扰频段内任意开辟出通讯频段窗口；
- 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。
- Objective: To evaluate the value of direct digital panoramic sialography. 摘要目的：评价直接数字曲面体层摄影在涎腺造影中的临床价值。
- Objective:To evaluate the value of direct digital panoramic sialogra phy. 目的评价直接数字曲面体层摄影在涎腺造影中的临床价值。
- A new method LFM in direct digital frequency synthesizing ( DDS) based on CORDIC algorithm is introduced in this paper. 本文介绍了一种应用CORDIC算法的线性调频直接数字合成(DDS)的实现方法。
- Objective To research the application value of direct digital radiograph (DDR) in nasal bone imaging. 目的探讨直接数字化X线摄影(direct digitized radiography,DDR)在鼻骨摄影中的应用价值。
- 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。
- Direct Digital Frequency Synthesis(DDS) technique is introduced and its spurious error is mainly studied. 介绍了直接数字频率合成技术以及分析其杂散误差,对相位截断误差和幅度量化误差进行了傅立叶级数分析研究。
- A Quadrature Direct Digital Frequency Synthesizer (QDDS) based on CORDIC algorithm is presented. 设计了一种基于CORDIC算法的正交输出直接数学频率合成器(QDDS);并在ALTERA FLEX10K 系列FPGA上予以实现.
- A new DDC (Direct Digital Control) system won't improve the operation of malfunctioning or inoperable devices! 一套新的DDC系统不可能改善系统的运行故障或损坏的设备。
- MMW high resolution radar range profile two-step stretch processing method direct digital synthesis （DDS）. 标 签 毫米波高分辨雷达 距离像 双脉冲伸缩处理 直接数字合成(DDS).
- 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。
- Direct digital synthesis (DDS) is used widely more and more, because its unique performance. 直接数字频率合成（DDS）技术，因为其独特性能，得到了越来越广泛的应用。
- You get standard waveforms along with the flexibility to create your own using direct digital synthesis for a stable, accurate output. 除标准波形外,还具有使用直接数位合成得到稳定和精密输出的灵活性。
- She cast her eyes down to avoid direct eye contact. 她垂下双目以避免对视。
- By using microprocessor technology, this system realized direct digit control (DDC) of the constant strain test, the constant revolution test, and digital measurement of testing parameters. 该系统运用微处理机技术实现了恒应变试验、恒转速试验的直接数字控制(DDC)和试验数据的数字测量。 文章阐述了系统的控制方式和功能模块化的硬、软件结构及设计要点,并对系统的功能、特点作出结论。
