This thesis has introduced the development of the traditional wireless sensor network and current situation at first, then analyzed the principle an framework of the wireless sensor network, and the challenge to the traditional wireless sensor network technology for environmental monitoring, put forward the novel environmental monitoring system based on wireless sensor network technology, have recommended a kind of brand - new wireless node design plan of framework of wireless sensor network and node hardware to be designed and realized, then based on ieee 802. 15. 4 standard, this thesis analysed the design faces the wireless communication protocol stack used in environmental monitoring, have introduced the realize of physics layer, data chain layer, network layer, application layer. have solved the wireless sensor network data sampling, systematic energy - conservation optimize, this thesis summarized the preceding work finally, have looked forward to the development, application and commoditization in the future
本文首先
介紹了傳統無線傳感器網路的發展概況及現狀，然後分析了無線傳感器網路的原理與架構及其在環境監測對傳統無線傳感器網路技術的挑戰，接著本文提出了新穎的基於無線傳感器網路技術的環境監測系統架構設
計，
介紹了一種針對大氣環境監測的全新的無線傳感器網路節點的構架設
計方案以及節點的硬體設
計和實現，然後本文以ieee802 . 15 . 4標準為基礎分析設
計了面向環境監測應用的無線通信網路協議棧，從工程角度
介紹了物理層、數據鏈路層、網路層、應用層的設
計實現，解決了無線傳感器網路節點的數據採集、節點互聯以及系統節能優化等問題，最後本文總結了前面的工作，展望了基於無線傳感器網路技術的環境監測系統在未來的發展方向和應用方式等幾個方面的發展遠景。
Small interfaces : design interfaces so that client controls data transfer
小型
介面：設
計介面讓客戶端控制數據傳輸。
Cost accounting introduces appropriate cost management concepts, techniques and skills such as cost planning, cost behavior, cost estimation, and cost accumulation and allocation systems ( job, process and activity - based costing )
成本會
計介紹了適當的成本管理概念、技術和技能，如：成本
計劃、成本特徵、成本評估和成本積累和分配體系（職位、過程和作業成本） 。
Based on the analysis and design above and the background of the fixture design of a factory of the institute, take oracle as database support, fixture design process and drawing management system is developed with the application of these technologies such as delphi, vc + + which are object - oriented programming language, jsp. this system concludes several modules, such as fixture design flow management module, fixture drawing management module, fixture speedy design
通過上述的分析和設
計，結合該院的工裝設
計實際情況，以oracle為數據庫支撐，利用面向對象的編程語言delphi 、 vc + +和網頁編程語言jsp ，開發了工裝設
計流程及圖檔管理系統，該系統包括:工裝設
計流程管理模塊、工裝圖檔管理模塊、工裝設
計介面模塊、報表列印模塊和用戶管理模塊，另外還包括一些輔助功能。
Provides complete text of encyclopaedia britannica with search capabilities, related links, and multimedia enhancements
-包括財務管理，管理稅務
計算機國際決策會
計介紹。
The etching reactor is developed to obtain reproducible tapers of desired diameter and length. an approach for on - line monitoring of etching using the power meter is demonstrated. based on the experimental data, the relationship between the leak - out optical power and change of time and also that between the leak - out power and width of the remaining width of cladding, and the fiber length exposed to hf acid are summarized
本文對氫氟酸腐蝕法製作光纖耦合器的反應裝置和實驗系統進行了設
計，
介紹了具體的實驗過程及其注意事項，通過對實驗結果進行分析總結，得出泄漏光功率隨腐蝕時間的變化關系以及泄漏光功率與包層剩餘厚度和腐蝕長度的關系。
Abstract : combined with the design of two prestressed hollow cement plate - bridge on west circle expressway of hainan province, the generall thought of design and structure disposal for straight girder bridge is explained
文摘:結合海南省環島西線高速公路上兩座預應力混凝土空心板橋設
計，
介紹了在曲線上採用直板梁橋的總體設
計構思和結構處理方法。
Information technology - biometric application programming interface - bioapi specification
信息技術.生物群系應用程序設
計介面. bioapi規范
On the analyzing of the technology trend, a plan of developing a multifunctional mark printer is brought forward the procedure of the development of a multifunctional mark printer is detailed in this thesis. a interface - card and a photoelectric board is designed, a control circuit is assembled by using them, through which a computer can control the mark printer ; a mark printer driver is developed by using com technology ; the mechanical part of the mark printer is designed by imitating milling machine ; a database software for components management is developed for high - speed train bearing industry. the managements include the registering for components, unique mark printing on components and analyzing of useful parameters. the user can complete the lifetime tracing for a component expediently
設
計介面卡和光電隔離放大電路，組成了電機控制和抬筆控制電路，通過它們pc機可以控制標號印表機工作；採用組件化技術開發了標號印表機控制軟體，驅動標號印表機工作；參考刻模銑床原理，設
計了機械部分；針對高速客車軸承廠，開發了零件標號管理軟體，使標號列印和信息管理系統有機結合起來，達到在登記零件信息的同時，自動列印零件的標號，方便了對零件的跟蹤管理。
Thirdly the article introduces situation of longdong hydro plant and its program design, then introduces the most featured hardware - - programmable logic controller ( plc ), which satisfied the users with its high reliability and flexibility
文中還
介紹了龍洞電廠的實際情況和據此所作的規劃設
計，
介紹了本系統中最具特色最為核心的硬體基礎? ?可編程序控制器。
This thesis probes into design of microcomputer system taking single chip microcomputer as central, anti - interference, security segregate and design of interface circuit etc. furthermore, the option to cycle of sampling various frequencies examine signals is also analyzed and it was utilized in the examine system. thus, the dependability and stability problem of the microcomputer examine system of hydraulic resistance testbed have been solved better, make this test a modern techniques and practibility is good
本文在以單片機為核心的微機系統的設
計、
介面電路設
計、抗干擾技術及安全隔離技術等方面進行了較深入的研究，分析了不同頻率檢測信號采樣周期的選擇，並在檢測系統中得到了應用，較好地解決了水阻試驗臺微機檢測系統的可靠性和穩定性問題，使得該試驗臺技術先進、實用性好。
When designing an interface for a process, consider the events the process needs to handle
當為流程設
計介面時，要考慮流程需要處理的事件。
Introduction on process design of continuous bars production line
連續棒材生產線工藝設
計介紹
Then main functional modules of system are analyzed. a few of main functions of system are illustrated by examples. the last chapter summarizes the research of the dissertation and explicates the developing aspects of the coming research wok
第四章建立了同等學力人員申請碩士學位全國統一考試統
計分析系統，對該系統進行了規劃和設
計，
介紹了系統的總體結構、特點及主要功能模塊，給出了系統運行實例。
This paper presents the important effect of construction cost analysis in the schematic design stage based upon the preliminary design of liberation bridge in guilin city, and indicates that a reasonable, safe and economical design scheme can only be obtained when the construction cost analysis is closely mordinated with the structural design of the project
本文根據桂林市解放橋的初步設計，介紹經濟分析在方案設計階段的重要作用，同時說明只有結構設計和造價分析密切配合，才能獲得合理、安全、經濟的設計方案。
