Bryce Marshall, Director of Strategic Services at direct digital marketing firm Knotice, agrees. "the future for m-commerce is bright but there are challenges, he says."
数字营销公司Knotice的战略服务主管布莱斯·马绍尔(Bryce Marshall)表示赞同：“移动商务前景光明，但充满挑战。”
The technique of direct digital synthesis(DDS)is a novel frequency synthesis technique.
直接数字频率合成（DDS）是一种新型的频率合成技术。
DDS (direct digital synthesis) is a sort of frequency synthesis technique, which has advantages such as short frequency conversion time, high resolution in frequencies, programmability and so on.
直接数字频率合成(DDS)技术是目前广为应用的一项频率合成技术，它具有频率转换时间短、频率分辨率高、可编程等特点。
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。
The direct digital frequency synthesis(DDS) is a new frequency synthesis techniques.
直接数字频率合成是一种新的频率合成技术；
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。
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。
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。
The paper discusses a prototype of direct digital frequency synthesizer(DDFS) controlled by microcomputer.
本文介绍一个微机可控直接数字频率合成器（DDFS）的实验样机。
The spectrumcharacteristic of the direct digital frequency synthesizer(DDS )is mainly stud-ied in this paper.
着重研究了直接数字式频率合成器（DDS）的频谱特性。
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。
The direct digital synthesis (DDS) is adopted to generate the pseudo-random code clock having high precision and stability.
利用直接频率合成技术产生高精度、高稳定度的扩频伪码时钟。
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。
Imaging well logging is a new generation of technology after direct digital logging. It is an integrated multidisciplinary technology.
成像测井是继数控测井技术以后新一代的测井技术，是一门多学科的综合技术。
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。
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。
Purpose: To compare the value between bone image of dual energy subtraction (DE) with direct digital radiography and bone scintigraphy in diagnosing rib lesion.
目的：比较能量减影（DE）骨组织像与核素骨显像对肿瘤患者肋骨病变的诊断价值。
A direct digital control system of SRD was designed using 80c196kb single chip as micro controller, and hardware and software debugging was made in this process.
本文以80c196 K B单片机为控制器，设计了SR电机直接数字控制系统，进行了软硬件的设计和调试。
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。
The system USES direct digital synthesize (DDS) and parallel processing technique, improves the performance and speed of the processing, and reduces the hardware delay mostly.
该系统采用了直接数字频率合成技术(DDS)和并发处理技术，提高了系统的性能和处理速度，较大程度地减少了硬件延时。
The system adopts direct digital synthetic (DDS) technology for building the sine wave generator to realize continuous regulation of amplitude, frequency and phase modulation.
系统采用直接数字合成（DDS）技术构建正弦波发生器，实现幅值、频率、相位等连续调节；
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