two-port system 中文意思是什麼
two-port system
解釋
二端對系統-
In this paper, the main works are followed : la cqt dialing and testing system has been developed ; 2. by using two moxa cards, the rs - 232 serial port is expanded ; 3. a software of interface and control is programmed, which can accomplish the function of data collection and analysis
Cqt撥打測試終端的研製，其中包括測試終端的總體設計、原理圖及印刷電路板設計，電路板焊接與調試。 2利用moxa卡對計算機的rs - 232串列介面進行擴展的設計與實現。 -
I o control : input : induction system adopts two unattached close circuitry ; output : two unattached c port
I o控制：輸入：感應系統採用兩個獨立的乾式接觸閉合線路 -
The experimental study is performed on the c - band tapered milo designed with the help of the simulation. the whole system is calibrated separately by parts. from milo to microwave receiving hom, the special system is simplified to be a two - port network and its s parameter is measured to calculate the attenuation factor a
對于微波功率的標定問題，我們根掘實驗條件，將整個系統劃分為幾個部分分別進行了標定，包括：從milo到接收喇叭組成的特定系統，將該特定系統簡化為一雙口網路，並測量出了其s參數，從而計算出與頻率密切相關的衰減量a ；對固定衰減器在不同微波頻率下的衰減量進行了標定。 -
The whole part of the data acquisition is build in a computer as two data acquisition cards. they are front card and rear card. the front card composed of four modules. they are : coin circuit module, data flow controller module, sdram array module and system bus interface module. the rear card composed of four odules. they are : asynchronous serial port interface module, adc control odule, ecg signal process module and gate control data produce module
數據採集模式實現部分的大部分工作是在前面板上完成的，後面板主要是一些外圍電路。前面板採集卡上從物理上來說主要有四塊電路:符合電路，數據流控制器電路， sdram陣列和系統總線介面電路組成。後面板採集卡從總體物理上主要有四塊電路組成: 485串列通信電路， adc控制電路，心電數據處理電路和門控信號產生電路。 -
With experiences of taking part in air - logistics market ' s investigating in shenzhen airport and ningbo air - port, and on the basis of gathering and analyzing the materials, the main aim of this paper is to study developing strategy in air - logistics of chinese airport in whole made a analysis of our airport present situation. then, on the point of airport, the author propose a theory including constructing air - logistics net and airport logistics center, enjoying airport code together, developing these airport with better conditions and the frame on how to construct air - logistics information system etc. in addition, the author predicts indexes related to air - logistics through utilizing two kinds of quantitative analysis methods, namely linear regression and gray - system
通過參加深圳機場物流園區市場調研課題及到寧波機場貨運公司市場部參加兩個月的寧波空運市場調研，收集和分析第一手資料，結合調研過程中所獲取的認識，本論文進而對我國機場的全局物流發展戰略進行研究，綜合分析我國機場現狀，站在機場角度，對我國航空物流的總體發展戰略提出構造航空物流網路、建設機場物流配送中心、機場代碼共享、優先發展條件優越機場、航空物流信息系統體系構造模式等策略。 -
Based on the theory about singlechip applied in modern control ’ s communications, the thesis is about designed a communicate system which based on the pic18f8260 microprocessors and achieved sms and had been publishing the news on the led ’ s panel via serial port. the thesis is expatiated the process of system design from two parts : hardware and sofeware
本論文是基於單片機在現代控制中的通信應用這一理論，逐步設計以pic18f8260微處理器為核心，通過串列埠實現sms短消息服務並將信息發布至led顯示屏的通信系統。本論文分別從兩大部分進行闡述系統設計的過程，即硬體部分和軟體部分。 -
North bridge is the center of communication with many high - speed buses and connects cpu, sdram, apg equipment and pci equipment. south bridge is connected to north bridge with pci bus, it has many low speed buses, such as isa, ide, usb, floppy disk, p / s2, serial port, parallel port. with its characteristic, this system has two million ethernet interfaces and one watch - control module
其中，北橋是整個系統的核心通信部分，含有豐富的高速總線介面，連接了cpu 、 sdram 、 agp設備和pci設備；南橋和北橋通過pci總線互聯，它引出的總線一般速率比較慢，如isa 、 ide 、 usb 、 floppydisk 、 p s2 、串口、並口等。 -
The minimum control system of single - chip micro - controller has two part of binary systems serial communication. for the communication between pc and the single - chip instrument, i chose to connect a chip named max232 to proceed the level conversion in electricity, establish the correspondence agreement, drawing the hardware connection diagram, and designed the correspondence procedure process with parts of procedures code ; for the communication between the single - chip instrument and the fx489, thesis uses 8251a to expand 89c51 for a serial port
對于pc機和單片機的通信，論文選擇了介面晶元max232進行電平轉換，設定了雙方通信協議，畫出硬體連接圖，並設計了通信程序流程及部分程序代碼；對于單片機和fx489之間的串列通信，論文採用了8251a擴展了89c51的一對串列口，同時也設計了這部分的通信程序流程及程序代碼；另外，還對89c51擴展了一片數據存儲器6264 。 -
The multi - port measurement system has the widespread use in microwave measurement, the measurement of multi - port device with two - port vector network analyzer ( vna ) is researched. this paper analyzes the commonly used error models and calibration methods of vna, program a trl calibration procedure for two - port vna, and compare the tested data with the data from vna. the comparison show that the programmed trl calibration procedure is in the same accuracy as the vna
本文討論了兩埠矢量網路分析儀常用的誤差模型和校準方法，編制了兩埠矢量網路分析儀基於trl校準法的校準程序，並把校準后的測量結果和矢量網路分析儀校準后的測量數據做了比較，比較結果說明編制的trl校準程序校準效果和矢量網路分析儀校準的效果相同。 -
In chapter 5, a simulation model to predict the diversity performance for the two - port antenna system with a given correlation coefficient has been developed
第五章對信號非零相關的雙埠天線的分集性能進行了模擬研究。 -
Application of serial port communication in the two - compututer redundancy system
串口通信在雙機冗餘系統中的應用 -
Three - port error model is analyzed and the procedure for control, calibration, test and display of this system is programmed. three - port device with one port terminated with a 50ohm termination is tested with two - port vna
分析了三埠測量系統的誤差模型，編制了誤差模型的校準程序和整個系統的測量程序，實現了控制、校準、測量的自動化。 -
This paper provides a discussion on the theory of distributed database, summarize the virtues and flaws of two - phase - commit protocol and replication technology, and then puts forward a synchronous update system model to solve the problems encountered while longkou port was realizing the data share among different kind of databases located in different area. this model, based on 2pc and the mainstream database replicate technology at present, can realize data sharing and data consistency among heterogeneous databases by odbc and tcp / ip technology, and now has been partly implemented
本文在討論有關分散式數據庫理論的基礎上，總結了兩階段提交協議和數據庫復制技術在異構型分散式數據同步中的優缺點，以龍口港信息系統在實現異構分散式數據庫共享過程中遇到的問題為背景，利過odbc和tcp ip技術，對數據庫更新事務進行存儲轉發，進而實現數據同步更新的系統模型，提出了一套網路環境下的分散式數據庫同步機制。 -
According to the function of the chip the system is separated into two modules, the core and the periphery logic. thereinto, the core module is divided into port a module, port b module, port c module and control module. each bottom module is described by rtl ( registers transfer language ) and whole module is completed by the graphics input method of max + plus
設計採用vhdl的結構描述風格，依據晶元功能將系統劃分為內核和外圍邏輯兩大模塊，其中內核模塊又分為porta 、 portb 、 portc和control模塊，每個底層模塊採用rtl （ registerstransferlanguage ）級描述，整體生成採用max + plus的圖形輸入法。 -
Dhi & dcw electrical works acted as main contactor in qinhuangdao port coal terminal fourth phase project and provided the following products and services : car dumper system, conveyor system, two sets of electrical control systems for reclaimer, technical services for central control station, and customer training
秦皇島港煤四期預留工程總包項目包括：翻車機系統、皮帶機系統和兩臺取料機設備的電控系統成套及人員培訓。 -
The system is an intellectual brain for company to integrate and optimize the national port ' s resource, it can provide efficient mathematical model design between two points, by which the company can get the best routeway
該系統是公司整合併優化全國各網點的口岸資源的智能大腦，它為兩點間的路由線路優化提供有效的數學模式設計。 -
The paper gives the process of how to design the whole application system, describes how the client terminal and the server terminal works in detail, gives the final result of the application program, analysises the problem happened in the system and gives the way to resolve them. the design includes two parts : ( l ) hardware : the hardware system is mainly structured by distributed single chip micyoco data processing system based on rs - 485 bus ; ( 2 ) software : this part designs the scm program by c language, we use visual basic to design the client and the server application program, the whole software includes com port communication program and remote data transmission, we also use sql server 2000 to build the remote database system
本系統設計完成的主要工作有： （ 1 ）系統硬體設計：主要是由基於rs - 485總線和單片機組成的分散式多路數據採集系統； （ 2 ）系統軟體設計：使用單片機c語言設計了單片機工作程序，使用visualbasic語言完成了系統中客戶端、服務器端應用程序設計，其中包括數據採集部分中的串列口通信程序設計和client server模式下的遠程數據傳輸程序設計，使用sqlserver2000完成了遠程數據庫的構建工作。 -
In this paper, the capacitance and inductor of cmos technology are briefly introduced firstly, and the noises of two - port network and cascade system are analyzed, the correlative formulas are shown at the same time
文中首先對cmos工藝中的電感電容進行了簡單介紹，對二埠網路噪聲和級聯系統的噪聲進行了分析並給出了計算公式。 -
Finally, the thesis analyzes address scan, port scan, operate system identify etc. to find what protocol to be used by the attacker in the information collections stage, and designs some program to deceive the attacker. also, in this section the style of honeypot, and the security of honeypot, including two designs about how to abduct the intrusion to the honeypot, the nat ( network address translation ) technique and the proxy technique will be discussed
在第三部分，分析地址掃描、埠掃描、操作系統識別等信息收集階段的攻擊的原理和所利用的協議，以及所採用的攻擊手段，詳細的論述對地址掃描攻擊的欺騙、對埠掃描攻擊的欺騙、對操作系統識別攻擊對欺騙的設計與實現。 -
Secondly, it can detect opened ports on the basis of results of the first port - scan, and get the information of service and version of these opened ports. thirdly, through many kinds of detecting ways, it can get the os - fingerprints of tcp / ip protocol stack of the destination computer, and guess the faraway operation system exactly. at last, taking cve ( common vulnerabilities and exposures ) as the standard, a more practical vulnerability database by combining the structures of two large - scale oversea vulnerability databases is designed
設計開發的網路漏洞探測系統具有較強的綜合性能，能夠提供多種埠掃描技術，在第一次掃描結果的基礎上對開放的埠進行第二次探測，得到開放的埠的服務和版本信息，通過多種探測方法獲得目標主機的tcp / ip協議棧指紋信息、較準確的推測出遠程操作系統，並以cve （ commonvulnerabilitiesandexposures ）為標準，結合國外兩個大型漏洞數據庫的結構，設計了較實用的漏洞數據庫。
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