d and d中文意思是什麼

d and d 的中文意思

d and d 例句

1. A d and d a conversion
   數模與模數轉換
2. In the d evelopment process, pcl - 818l car d is a d opte d by the system as the interfaces of a / d and d / a
   在系統的開發過程中，採用的是p卜818l數據採集卡作為d 、八接。
3. The influence of the parameters such as d and d ( illm thickness ) on laser in d uce d voltage ha d been d iscusse d
   根據該公式，對影響激光感生電壓的一些參量如、 d 、薄膜的厚度d等進行了討論。
4. So d igitalizing analog signal is the tren d of information technology, in which a / d and d / a plays an important role
   所以模擬信號數字化是信息技術的發展趨勢，而a d和d a轉換器在其中扮演著重要角色。
5. Then, the article intro d uces the circuits of the a / d and d / a, and the conversion metho d of the a / d and d / a
   文章還就實現a d 、 d a轉換的具體電路和利用該數據採集卡實現a d 、 d a轉換的具體手段進行了闡述。
6. The software ra d io consists of several parts as follow : analog front en d , broa d b and a / d and d / a, d igital upper / d own converter, high - spee d signal processor and so on
   它由以下幾個部分組成:模擬前端，寬帶a / d和d / a ，數字上/下變頻器，高速數字信號處理器等。
7. The main point of the conception about software ra d io is as follows : first, making the a / d and d / a close to the antenna ; secon d ly, accomplishing as much as function by software
   軟體無線電的關鍵思想在於兩點:一是將a / d ， d / a盡量靠近天線，二是用軟體實現盡可能多的無線電功能。
8. The package of software contains the pi d algorithm realizing for the d sp control system, the program for system initialization as well as the program for a / d and d / a transforming
   對控制系統進行了軟體設計。軟體包括控制系統pid演算法的dsp實現、系統初始化以及a d 、 d a轉換程序。
9. After the metho d s of a / d and d / a were expresse d accor d ing to the har d ware and nee d s of the system, the article explains the language environment and the program structure
   在結合具體硬體環境和系統需求明確了系統的a d 、 d a等環節的實現手段以後，文章對系統控製程序所採用的具體的語言環境和程序結構進行了說明。
10. The basis i d ea of software ra d io ( sr d ) is to place the a / d and d / a close up the antenna as possible as and use software to realize all the function of any ra d io base d on an opening and blocking currency har d ware platform
    軟體無線電的基本思想是將寬帶a / d及d / a盡可能靠近天線，將無線電臺的各種功能在一個開放性、模塊化的通用硬體平臺上盡可能多的用軟體來實現。
11. The synchro / resolver signal transmit & receive car d is the most important and d ifficult part which use d special a / d and d / a ( axis angle converter ) to make conversion between the analog singnals relate d to angle and its d igital counterpart, thus solve the issue of stimulation and test of synchro / resolver signal ， improve d the test precision and automatic d egree
    其中同步器卡的開發是難點和重點，它採用特殊的數/模、模/數轉換器件?軸角轉換器，實現了角位-數字信號相互間的直接轉換，解決了隨動系統性能檢測中三相同步器信號激勵與同步器信號/分解器信號數字化檢測問題，有效提高了系統的自動化程度和檢測精度。
12. It is wi d ely use d in many circuits, such as high precise comparators, a / d and d / a converters, d rams, flash memory circuits, and other analog or mixe d circuits. therefore, it is significant to d evelop a voltage reference circuitry that is compatible with d igital cmos technology and can be integrate d into a system on a chip ( soc )
    基準電壓源（ voltagereference ）是超大規模集成電路和系統的重要組成部分，應用於高精度比較器、 a d和d a轉換器、隨機動態存取存儲器、閃存電路等多種電路和電路單元，亦為系統集成晶元（ soc ， systemonachip ）所廣泛採用。
13. He complete d his early e d ucation in hong kong and guangzhou and was awar d e d ph. d . and d . sc. d egrees in the unite d king d om
    張教授于早年在香港和廣州就學，之後在英國獲得哲學博士及科學博士學位。
14. Before the d evelopment of the system, the article d escribes the above - mentione d aspects, as the bases of the system d evelopment. the article emphasizes relate d auto - controlling technologies : open - 100p and close - 100p, and control mo d e of negative - fee d back, the scatter and quantization of the simulate signal, the conception of a / d and d / a conversion and co d e / enco d e, the basic sampling principles of the simulate signal. the article intro d uces the operation metho d and process of the system by means of the loa d spectrum
    文章對相關的理論進行了陳述，以作為系統開發的理論依據，重點闡述了自動控制系統中包括開環閉環在內的幾大主要控制模式，以及有關的負反饋控制方式，模擬信號的離散與量化，模數轉換、數模轉換、編碼譯碼的概念，及模擬信號采樣的基本原理? ?采樣定理，並以載荷譜法為例，簡述了所研究的系統將要採取的工作方式及工作過程。
15. The paper is complete d research of measurement and control system base d on d sp un d er technology. the paper is d esigne d a car d with the d ata - collection conversion and control by a d opting mainly tms320f240 among the d sps as kernel processor, with peripheric a / d and d / a circuit epm7128 ' s d eco d e and latch circuit and isa interface circuit
    本論文主要是採用數字信號處理器dsp中的tms320f240作為核心處理器，結合外部的模數轉換和數模轉換電路、可編程邏輯器件epm7128的地址譯碼和鎖存電路和isa介面電路，設計了集採集、轉換、控制於一身的isa卡。
16. The meter ( which is calle d pccm2002 for short ) is d esigne d on the basis of mcs - 51 single - chip microcomputer technique. the har d ware is compose d of single - chip microcomputer mo d ule and electrochemical mo d ule. the single - chip microcomputer mo d ule can be d ivi d e d into five parts, cpu circuit, a / d and d / a circuit, peripheral memory circuit, i / o interface circuit, d istributing a d d ress circuit ; the electrochemical mo d ule is ma d e up of potentiostatic circuit, galvanostatic circuit, potentiostatic - galvanostatic ( p - g ) conversion circuit, signal measuring circuit. the software of the meter is e d ite d by c51 language, it is well - structure d and mo d ule. all program mo d ules have been linke d into an executable files after compile d separately, then copy to eprom
    恆電位控制下的恆電量智能化腐蝕監測儀採用基於mcs - 51單片機技術的智能化設計，儀器硬體由單片機系統模塊和電化學介面模塊組成，單片機系統模塊包括cpu電路，片外存貯器擴展電路，模數和數模（ a d和d a ）電路，輸入輸出（ i o ）介面電路，地址分配電路，各電路模塊通過系統總線交換信息；電化學介面模塊主要由恆電位電路，恆電流電路，恆電位-恆電流（ p - g ）轉換電路，信號放大與採集電路組成。
17. 3. after analyze to various metho d s of the synchronous control, d eci d e to utilize a / d and d / a combines with the numerical pi d control metho d to research the pc of synchronous controller and apply to the space vehicle ’ s vibration environment experiment
    3 .對同步控制的各種方法進行了分析，結合數字pid控制演算法，率先採用計算機自動測量和控制技術，將基於pc的a / d和d / a板卡應用於航天器環境模擬試驗的並聯雙振動臺系統中，解決了同步控制器研製的問題。
18. Correspon d ence analysis showe d that genotype b was significantly more common in patients with asymptomatic carriers ( asc ), chronic hepatitis b ( chb ) and severe hepatitis ( sh ) compare d with liver cirrhosis ( lc ) and hepatocellular carcinoma ( hcc ) ( p < 0. 05 ). genotype c was most prevalence in patients with lc than in those with other liver d iseases ( p < 0. 05 ). genotype d and d - mixe d genotype were foun d to correlate d with hcc at first time
    對應分析顯示，無癥狀攜帶者、慢性肝炎、重型肝炎中基因b型所佔福建醫科大學2000級碩士研究生畢業論文中文摘要比例明顯高於肝硬化和原發性肝癌（ hcc ）組（ p < 0 . 05 ） ; c型在肝硬化中所佔比例顯著高於其它疾病組（ p < 0 . 05 ） ; hcc與基因d型及其混合型關系密切。
19. Usually, a real simulation system inclu d es a net system compose d of several computers and i / o interface i / o interface in it is use d to communicate between simulation computer and manipulation har d ware, mainly, it is use d in a / d and d / a between them
    一個實時模擬系統往往包含有多臺計算機構成的網路系統和i o介面，其中的i o介面是用於模擬主計算機和硬體操縱盤臺之間的通信，用來實現兩者間的數字量模擬量之間的相互轉換。
20. This system uses the evm of d ual - core tms320vc5471. for the d ifferent core configuration, the d sp has a / d and d / a mo d ules to implement speech signal i / o channel, real time implementation of speech co d er. meanwhile embe d d e d operation system uclinux is transplante d into it
    結合cpu兩個內核不同的體系結構，在dsp內核上連接a / d 、 d / a模塊實現語音信號i / o通道以及實時實現語音編解碼演算法，在arm內核上移植了clinux嵌入式操作系統。

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