pivotal methods 中文意思是什麼
pivotal methods
解釋
主元素法-
Because green function is pivotal in green function method, several typical methods are introduced for solving green function
用green函數方法解決問題的關鍵在於求解green函數。通過具體實例，介紹了幾種求解green函數的途徑。 -
Feed network is an important part of short - wave multimode multi - feed antenna system. the design of feed network is a pivotal technique in the process of projecting antenna system. above all, this paper expounds the basic notion and procedure of analyzing and designing feed network applying the substructure analyzing theoretics of interconnect - net. basing on these jobs, some radical methods of analyzing and measuring the substructure of feed network are presented. using these methods, substructure is analyzed and measured. finally, a measured database of substructure of feed network is established
本文首先闡述了應用網際網路絡子結構級聯理論分析、設計饋電網路的基本思路和步驟，在此基礎上，給出了饋電網路子結構分析和測量的基本方法，並且應用這些方法完成了饋電網路子結構的分析和測量，最後給出了饋電網路子結構的測量數據庫。 -
In the tranditional predicting methods, the remained life of certain pivotal parts on particular breakdown patten was regarded as the remained life of the whole machine. mathematical statistics was also used to obtain the mean remained life of machinery because of incomprehension on the mechanism of fault development
以往的機械設備剩餘壽命預測方法是預測設備關鍵部件在特定故障損壞模式下的剩餘壽命，以關鍵部件的剩餘壽命作為整機的剩餘壽命，在故障發展機理不是很清楚的情況下，代之以統計學的黑盒模型，估算設備群體的平均壽命。 -
Discussion in the process of development, differentiation and metabolism, the differential expression of genes plays a pivotal role. mrna differential display, established by liang and pardee in 1992, is among the most sensitive methods for the isolation of differentially regulated mrna
經rt一pcr反應篩查17例脊索瘤及其周圍正常組織，擴增片段大小與引物設計一致，可見瘤周組織rnf一n基因表達明顯增高，而ctc一sodms在腫瘤組織中表達增高。 -
The paper mainly introduces existent questions blocked ecdis " development in the first chapter, analyzes merits and shortcoming synthetically and puts forward author " s methods at last ; introduces briefly design and structure on web - based e - chart in second chapter ; introduces some pivotal technologys in the webchart system and build the chart data model in the third chapter ; explains all website " s design and structure in the fourth chapter ; points out the development aspect in the future and some needed works in this system in the last chapter. in conclusion, webchart " s database is published to the internet site
在第一章中主要介紹制約電子海圖顯示與信息系統技術發展的幾個因素，提出擴大電子海圖應用范圍所存在的主要問題及解決的技術和方法，並且使電子海圖應用於現代物流中；第二章簡要介紹了web下電子海圖系統的設計與實現，對各種方法進行了比較；第三章介紹web下電子海圖顯示及控制採用的關鍵技術以及海圖數據模型的建立；第四章主要說明了現代物流網站的設計與架構；最後一章指明了系統將來的發展方向和所需要做的工作。 -
In part of the data warehouse technology, the background, the concept, the architecture, the data structure, the data mode, the pivotal technology and the establishing process of data warehouse are introduced. with regard to the data mining technology, the thesis sets forth the concept and characteristic, object mined, typical methods and tools used of data mining, and specifies the process of data mining. the concept and characteristic, the multiple dimensional data structure, the data processing mode and analytical technique of olap technology are depicted concerning the olap technology, and the architecture and data organization of the olap system are presented in detail
在數據倉庫技術部分，介紹了數據倉庫的產生背景、概念、體系結構、數據組織結構、數扼組織方式、數據倉庫的關鍵技術以及數據倉庫的創建步驟；在數據挖掘技術部分，介紹了數據挖掘的概念及特點、數據挖掘的目標、使用的典型方法及工具，重點闡述了數據挖掘的過程；在olap技術部分，介紹了olap的概念及特徵、 olap的多維數據結構、數據處理方式和分析方法，重點闡述了olap系統的體系結構和數據組織的三種方式。 -
In the sixth chapter, on the base of the development of the card reader driver and link to the fashion technology of the device driver development named wdm, the paper makes some studies in the methods and the realizations and some settlements for the pivotal technology of wdm driver development. at last, the paper gives some summarizations and some prospects
第六章在對加油站自動化系統讀卡機驅動程序開發的基礎上，結合當今流行wdm驅動程序開發技術，詳細闡述了基於wdm的驅動程序設計方法、實現過程和其中一些關鍵技術，最後對本篇論文進行了展望與總結。 -
On the basis of summarization of the simulating technology of sonar signal, the paper brings forward the mathematics models of radiate noises of ships and torpedo, and simulates in computer ; tests the correctness of some pivotal methods through the simulation, on the basis of which, system scheme being brought out ; a parallel processor with twelve sharcs, combining with parallel processing theory and topographic configuration, is used to realize the algorithm of noise simulation on the basis of research on optimum distribution of algorithm and method of embedment in real time ; at last, gui, realized with vc + + language, is used to set parameters and control the whole parallel system flexibly and conveniently
本文在綜述聲納信號模擬技術的基礎上，首先提出艦船和魚雷輻射噪聲的模擬數學模型，並進行了計算機模擬實現；通過計算機模擬驗證了一些關鍵技術的正確性，並由此提出系統實時實現方案；構造了一個12個處理器的并行處理機? sharc陣列，結合併行處理理論和sharc陣列的拓撲結構研究了有關模擬演算法的最優分配及其嵌入整個聲納系統的方法，實時實現了噪聲模擬演算法。最後，使用vc + +語言編寫人機界面，靈活、方便地進行參數設置以及對整個并行處理系統進行控制。 -
The vxibus c - size and i, q channels are employed in this module design, and the sampling rate in each channel reaches 500mhz. the memoty deep of the system is 2mb each channel and cpu is high - speed embedded cpu ( powerpc ). the timing and logic function are fulfilled by fpga. after the disscusion of signal adjusted, the detailed scheme of this module design have been showed. in this design, there is much logic function design, and it is very strict with the hardware language program. so the basic flow of hardware program design and several very important methods of high speed logic function design, which is described by vhdl, are introduced. also, expatiated the inner modules structure of fpga for forepart circuit, the keystone and difficulties of the design. the design of high - speed pcb is another difficuty of realizing high - speed data acquisition system, and it is very important. the timing simulating results of several pivotal modules are depicted. high - speed signal paths are terminated to match the characteristic impedance. the design undergoes integrity analysis and software simulation
在本模塊的設計中，有著大量的邏輯設計，對硬體語言程序的編寫要求比較高，因此，文中介紹了硬體程序設計的基本流程，以及幾種基於vhdl硬體語言設計在高速邏輯設計中非常重要的方法。同時闡述了本模塊設計的前端fpga的內部模塊結構，設計的重點、難點，並給出了重要模塊的時序模擬結果。高速pcb的設計也是目前實現高速數據採集系統的難點和重點，文中詳細的闡明了高速pcb設計中的注意點，以及作者在設計本模塊時的經驗和心得。 -
Data integration methods in use are analyzed, based on which an ontology and xml based data integration framework for eliminating the semantic heterogeneity is brought forward, the pivotal technology of implementation is expatiated and an application instance in the integrate information system of aviation equipment is given
摘要分析了現有的數據集成方式，針對集成中的語義異構問題提出一種基於本體和xml的集成系統框架，並進一步闡述了其實現中的關鍵技術，結合航空裝備信息的特點，給出該框架在航空裝備信息集成系統中的具體應用。 -
Grid generation is a pivotal technology of cfd ( computational fluid dynamics ). follow the complication of problem in cfd field, the grid generation technology has developed in two ways : in the first place, it improved grid generation method to adopt the increasingly complicated figuration ; on the other hand, it developed new methods to deal with the problem including fluctuant surface, such as multi - body separation problem etc. among this ways, the overlap grid technology is a vive research aspect
網格技術是cfd （ computationalfluiddynamics ）領域中的關鍵技術。隨著cfd涉及問題的復雜化，網格技術在兩個方向上逐步發展:一方面針對不斷復雜的外形處理需求改進網格方法，從而能夠模擬復雜飛行器及其各個氣動部件的細節;另一方面發展適應撲翼、多體分離等變幾何外形問題的網格方法，使得cfd的工程應用領域不斷拓寬。這其中，重疊網格方法是一個較有活力的研究方向。
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