composite key 中文意思是什麼
composite key
解釋
復合鍵、組合鍵-
The quadratic equation algorithm utilizes spa, dpa and principle of rsa - crt, converts the complicated prime factorization of a large composite number into finding the solution of a quadratic equation and gains the private key at last
該方法綜合利用spa 、 dpa攻擊手段和rsa - crt演算法原理，將rsa演算法的大數分解難題轉化為以私鑰p或q為解的二次方程，最終獲取演算法私鑰值。 -
Several key factors, ultrasonic dispersion, water / organic solvent mixing medium, surfactant, were used and adjusted in order to obtain composite particles with better monodispersity and less organic impurities
在有機介質加入量較小的情況下，極性較小的丙酮更有利於合成單分散性好、粒徑小的磁性復合微球。 -
Some key issues in the modeling of a long span composite cable - stayed bridge are discussed such as cable tension, dead load, large deflection, concrete deck stiffness, concrete deck - steel girder connection, and boundary condition. some conclusion can drawn from the thesis : 1. the initial equilibrium configuration of the bridge is clarified in the thesis
本文深入討論大跨度結合梁斜拉橋"基準"有限元模型建立過程中的幾個關鍵問題並得到一些有意義的結論： 1 .明確斜拉橋在索初應力和恆載作用下的初始平衡構型? ?處于初始平衡狀態時的幾何位置，給出了其計算方法。 -
The construction of the composite information prospecting model for deposit concentration areas and the composite information prognostic model for deposit concentration areas seems to be the key problem in the prognosis
由於貴金屬與有色金屬大型、超大型礦床密集區控礦因素的共性，故成礦系列理論應用於大型、超大型礦床預測是今後研究的主攻方向。 -
Based on the background of a city key construction project 棗 hongshan bridge, the loading characteristics of the deck system consisting of mutirow cantilever in composite structure of steel and concrete is studied in the thesis
本文以長沙市洪山大橋為工程背景，對組成橋面板系的多排懸臂鋼-混凝土組合梁的受力特點進行了研究和探討。 -
We calculate composite block masonry ' s heat transfer coefficients under different conditions, then we discuss these data according to the energy efficiency criterion in wuhan city and come up with the key factors which influence the thermal performance of composite block masonry, . at the end of this paper we summarize and look forward to the future of composite blocks in engineering practice in mechanics and thermal sides
在熱工性能方面，對復合砌塊砌體的保溫、隔熱性能進行了分析與推導，定量推導了多種情況下復合砌塊砌體的傳熱系數，並結合武漢市的地方節能標準進行了論證，提出了影響復合砌塊砌體熱工性能的關鍵因素。 -
To modify the composite key member order
修改組合鍵成員順序 -
Changing the sort order by modifying composite key member order
通過修改組合鍵成員順序來更改排序順序 -
Liquid - solid extrusion of composite material is a new kind of metal forming process, which has been developed in recent years with a promising practical application prospect for its simple working procedure, low cost and good workpiece performance. through a lot of experiments, the optimization and chosing method of key process parameters ( pouring temperature, mold warm - up temperature, impregnating pressure, impregnating time ) has been mastered. under the precondition of appropriate chosing these parameters, the effective control of extrusion velocity is the key of mading good workpiece. but the control of extrusion velocity remains a handwork, and it is heavily affected by such uncertainties as a handler ' s knowledge and skill about the process. in order to solve the problem, the automatic control of the extrusion velocity is studied, and a computer control system is also designed under existing condition
通過大量實驗，已掌握了關鍵工藝參數（熔液澆注溫度、擠壓模預熱溫度、浸漬時間、浸漬力）的優化選取方法。在合理選取關鍵工藝參數的前提下，擠壓速度的控制是成形出質量良好製件的關鍵。但是，目前對于擠壓速度的控制仍停留在手動控制階段，利用該工藝制備管、棒材製件的成功與否受操作者對該工藝及其設備的經驗及熟練程度等不確定因素影響很大。 -
Originally established in 1938 as a flight training school for the chinese air force, zhi jiang ' s airfield played a key role in combating the japanese army ' s massive 1944 ichi go offensive, when the china american composite wing ' s 5th fighter wing was moved there to support chinese forces in south china
最初是作為中國空軍的飛行訓練學校於1938年建立的，芷江機場在1944年的芷江保衛戰中扮演了一個很重要的角色，當時中美空軍混合編隊的第五戰斗編隊移師到那支持華南的中國空軍。 -
Through composite analysis, results show that the increase of the negative vorticity in key area agrees well with the westward extension of sth. more studies reveal that the westward extension index can perfectly describe the position of the sth in june, according to the serial value of the sth position in june, it is founded that when the voticity value in the key area increases ( decreases ), the sth in june is more westerly ( easterly ) than normal
分析表明，該指數能夠很好描述西太副高中期內的西伸過程，當關鍵區負渦度增大時，表示西太副高西伸；同時，該指數也是描述副高東西位置的合理的指標，並由此建立了六月份副高東西向活動的年際序列，研究表明，當該區域負渦度值大，說明副高位置偏西；當該區域負渦度值小，說明副高位置偏東。 -
Key issues including water plugging types, waterproof board spreading methods, drop of external water pressure and lining design for resisting hydraulic pressure, etc. were studied, thus the composite waterproof and drainage system to control drainage were put forward, including grouting sphere for water plugging, primary support, grid sysytem for waterproof and drainage and lining to resist hydraulic pressure
重點就堵水方式、防水板鋪掛形式、外水壓力的折減以及抗水壓襯砌設計等技術問題進行了研究，提出了可通過注漿堵水圈、初期支護、防排水網格和抗水壓襯砌形成綜合防排水體系，它可以達到控制排放的目的。 -
Based on the structural features of semi - cylinder composite dike in the yangtze estuary deepwater channel regulation phase project n a section, the key technique of such semi - cylinder transportation procedure and precasting quality is analyzed and summarized, which may serve as a reference for relevant construction
摘要依據長江口深水航道治理二期工程n a標整治建築物中半圓體混合堤結構形式，對這種半圓體大型構件出運工藝與預制質量控制的技術關鍵進行分析總結，供同行參考。 -
In this paper, monte carlo ( mc ) method is used in the research of distributing of construction duration and computation of time parameter of pert network. according to probability viewpoint, critical line and key degree of activity in the network are also defined. aiming at the limitation of application of the mc in large scale the network, the simplified computational method for the network is presented with quantum probability theory and composite method of path in network
本文用mc （ montecarlo ）方法研究了施工工期的分佈規律和pert （ programevaluationandreviewtechnique ）網路的時間參數的計算；用概率論的觀點定義了pert網路主導線路和關鍵度；針對大型施工進度網路mc方法應用的局限性，採用線路合成方法，引進當量概率概念，提出了pert網路的簡化計算方法；根據工程搭接施工網路的特點，將其轉化為廣義pert網路，探討了其施工進度風險的計算。 -
The essential intention of conditional access system ( cas ) is to achieve pay - tv of the digital broadcast system by means of subscriber management and authorization control. so cas is the key technology to realize the pay - tv and interact - tv. based on composite technology in transport layer, paper describes the production and structure of transport stream in mpeg - 2 standard, mpeg - 2 program special information and conditional access definition in service information from dvb standard
有條件接收系統（ conditionalaccesssystem ， cas ） ，其基本目的是通過對用戶的授權控制和管理，實現數字廣播電視系統的有償服務，在為運營商帶來經濟上回報的同時，也能為用戶提供更多、更高質量的服務內容，它是實現付費電視、交互電視的關鍵技術。 -
Abstract : an innovative process of direct reduction of cold - bound pellets of iron concentrate with coal - based rotary kiln has been developed successfully, with some key technologies, including special composite binder and corresponding reasonable techniques
文摘:鐵精礦冷固球團礦煤基回轉窯直接還原新工藝的關鍵技術包括復合粘結劑及相應的配套實用技術。 -
For database composite key
復合鍵組合鍵 -
Abstract : the paper introduces the erection of the steel box girder of a long - span steel box - concrete composite bridge using broad double guide beam without affecting the normal operation of electrified railway and marshalling yard under the bridge, including construction plan, design of gantry crane and guide beam, as well as key points of construction technology
文摘:介紹在保證電氣化鐵路、編組站場正常運營情況下，運用寬幅式雙導梁解決大跨度鋼箱混凝土結合梁橋的鋼箱梁架設技術難題，重點闡述了施工方案，龍門吊、導梁設計，工藝要點等。 -
Unbalanced vibration signal of double - shaft rotating system with little rotating - speed difference is a composite signal called " beat ", how to separate two rotors " unbalanced weight from " beat " is the key of balancing for this rotating system
微速差雙轉子系統的不平衡振動信號是個拍振，如何從復雜的拍振信號中，分離出內、外轉子各自的不平衡量，一直是該類轉子動平衡的難點。 -
With a composite key, the ordering of the member keys is based first on the value of the first member key, and then on the value of the second member key
使用組合鍵，成員鍵首先基於第一個成員鍵的值，然後基於第二個成員鍵的值進行排序。
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