改變頻段 的英文怎麼說

中文拼音 [gǎibiànbīnduàn]
改變頻段 英文
change band
  • 改 : Ⅰ動詞1 （改變） change; transform 2 （修改） revise; alter; modify 3 （改正） rectify; correct 4 ...
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 段 : Ⅰ量詞（部分） section; segment; part; paragraph; passage Ⅱ名詞（姓氏） a surname
  • 改變 : change; alter; transform; turn; convert; mold; modify
  • 頻段 : frequency range; frequency channel
  1. In the evening this station changes frequency and broadcasts on another band.

    該電臺晚上改變頻率，在另一波段播音。
  2. This thesis presents a new audio digital watermark algorithm based on has model. the steps : first, it classifies the signals through fft ; second, calculating the tones, noise and the overall masking threshold of different phases through has, and changing the energy value of tones which are more than that of the overall masking threshold to embed the watermark information

    提出了一種基於人類聽覺系統（ has ）模型的音頻數字水印演算法，該演算法首先對信號進行分段離散快速傅立葉變換（ fft ） ，再根據人類聽覺系統模型計算出各段的類純音、類噪音以及各段的總體掩蔽閾值，通過改變大於總體遮蔽閾值的類純音的能量值來嵌入水印信息。
  3. Based on the analysis of commercial banks " current concept about fund management, this paper brings forward that fund management is the main - string in its operation, and that the concept of fund management, including security and profitability, is extended from current " forrying fund " to the management of the fund cost and fund risk the paper comprehensively discusses the principle of fund management, the management of fund costs, the tactics of management about fund liquidity, the measures of management about fund risks and how to solve the problems on interest risk in the period of frequent interest fluctuation. the paper puts forward ideas on how to improve the fund management. the security, liquidity and profitability of the fund, which are both contradictory and integrated with one another, are internal factors of fund management. fund liquidity is traditional core question. commercial banks face with a number of risks of witch credit risk is the greatest one because our country has adjusted interest rates 8 times since 1996, which covered a period of frequent interest fluctuation

    商業銀行面對許多風險，但最大風險是信用風險。由於我國自1996年以來已連續調整了8次利率，近幾年是利率波動頻繁時期，研究利率的敏感性問題顯得特別重要。要改善資金管理，提高商業銀行的經營水平，就要建立資金管理是商業銀行經營主線的理念，對資金要統一規劃和管理；要改革銀行的體制，建立現代企業制度和法人治理結構，在體制上為資金管理提供有利的運行平臺；增加改善資金流動性管理所需的貨幣政策工具，擴大資金調控手段；打破貨幣市場的僵化局面，為資金管理創造有利的宏觀環境；續續優化負債結構和負債載體設計；增強資金信用風險規避和化解的措施；通過銀行資源整合，努力尋找資金的安全投放渠道，最終完成經營模式由傳統型向現代型的轉變。
  4. Based on the results of the theory analysis and computer simulation of suspended stripline low pass filter, band pass filter, the transition from waveguide to finline and the transition from waveguide to suspended stripline, the structure design and manufacture were made. the measured results match the requirement. different from the traditional mixers used in the domestic communications satellites, the sub - harmonic balance mixer type was used in the ka - band mixer design

    在ka頻段混頻器的研究過程中，通過對衛星和飛船所用到的混頻器進行研究，在對ka波段的傳統射頻前端電路的分析基礎上，提出改變以往星上傳統的基波混頻方案，採取了次諧波混頻方案，降低了本振頻率，簡化了本振鏈路，使噪聲特性、可靠性獲得改善。
  5. Consequently, a synthesized method is presented in this thesis, which includes time - domain shifting, window - length changing and window - type changing ( the second time - domain sequence lags behind the first one with l points, performing n - point fft analysis on the first sequence and m - point fft analysis on the second one with different windows, and finally correcting peak lines )

    利用這一原理提出通用的離散頻譜相位差校正方法：時域平移+改變窗長+改變窗函數，即第二段時域序列比第一段滯后l點，採用不同窗函數對這兩段時域分別作n點和m點的fft分析。
  6. 4. to decrease the usage of network resources by network management systems even more, combined with the fact that the performance of network management is affected by the scheme to collect management information, a new algorithm - gpa ( group - prefetching algorithm ) has been put forward used for retrieving management information from the element level in heterogeneous wan ( wide area network ). gpa can adjust many little retrieving objects into one prefetching group to access by using the schemes of group prefetching, objects of group changed self - adaptively, fault tolerance etc., and thus can decrease the frequency of retrieval, use fewer network resources and decrease the network overhead without alteration of iiop, snmp or cmip too

    4 .為進一步減少網路管理系統對網路帶寬的佔用，結合被管對象信息的收集策略直接影響網管系統性能的特點，針對異構大型網路環境下多管理對象的信息收集問題，提出了一種提取多管理對象信息的新演算法?組預取演算法gpa （ group一prefetehingalgorithim ） ，該演算法同樣能在不改變管理協議，如iiop 、 snmp或cmip的情況下，採用組預取策略、組對象自適應擴充策略、組對象自適應收縮策略、容錯策略等，將多個分散的、處于相同或不同被管設備上的、在未來一段時間內的管理對象的訪問組合在一個預取組中進行訪問，減少對管理對象的訪問頻度，從而可以較少佔用網路資源，減小整個網路開銷。
  7. Software radio system is applicable to multiple frequency bands and it can change working mode flexibly. the system can interwork and is compatible with various equipment of different system and standard

    軟體無線電系統適用於多個頻段，可靈活地改變工作模式，能與不同體制和標準的各種設備互通和兼容。
  8. This part put forward the system conception of kdd and the apriori algorithm. then evolved the create - frequent - set algorithm which was fit for the freight agent management system. because of the shortage of efficiency, 1 improved the algorithm. because some of the items were not boolean variables, 1 need the quantitaitve attributes association rules discovering algorithm. in general, there had the levels among the items, so multilevel association rules existed. after perfecting the algorithmic need interpret and evaluate the knowledge. in the end, 1 discussed the privacy and security of kdd. the fifth part described the future problems and prospect

    第四章是論文的主體，著重介紹知識發現的全過程，按照semma方法論首先進行數據準備，然後進入數據挖掘階段，提出知識發現的概念體系和公認的apriori演算法，從該演算法演變出適合於貨代管理系統的生成頻繁項目集的演算法；因為在實際應用中存在效率上的不足，因此進一步地提出了改進方案；在事務處理中各個項目並不都是布爾型變量，因此需要特定的針對多值屬性的關聯規則發現演算法；通常情況下，項目之間存在有層次關系，因此多層次關聯規則的發現普遍存在；演算法完善並運行后需要對發現的知識進行解釋和評估；本章的最後討論了知識發現的私有性和安全性問題；第五章講述有待解決的問題和發展前景。
  9. In this paper, two 50t / h coal - fired boilers " burning control system of 26 # heating station was studied as its thesis, the primary pid controller was improved as its purpose, fuzzy control theory developed rapidly at present was applied as its means. the design scheme is that controlling transducers change rotate speed of supplying coal electromotor, fan, and blower using 8051 micro - controller. it realized computer control of burning process

    本文以26 ~ #供熱站的2臺50t / h燃煤鍋爐的燃燒控制為課題，以改進原有pid控制為目的，以當前發展比較迅速的模糊控制理論為手段，提出了採用8051單片機控制變頻器改變給煤機、引風機和送風機轉速的設計方案，實現了燃燒過程的計算機控制。
  10. Then, detail discusses were given on. finally, on the basis of above analysis and research, by comparing various design methods, a l band agile frequency synthesizer with 256mhz bandwidth and 1mhz resolution was designed, whose switching time was within 4 us. however, the spur performance is to be improved

    最後，在對各種捷變頻技術綜合分析和研究的基礎上，經過反復的方案比較論證，設計了一個l波段256mhz帶寬，步進為1mhz的捷變頻頻率合成器，捷變時間在4 s以內，不過雜散指標還有待進一步改進。
  11. The growth of technique for modern remote education has changed the traditional face - to - face education through audio - and vedio - media, as well as computer and internet network technologies, overcome the limit in space and time, and achieved share in the finite education resource, to make more and more people to have chance to learn

    現代遠距離教育技術的發展，改變了傳統面對面的教育方式，通過音頻、視頻及計算機技術、 internet網路技術等手段，有效突破了時空的局限，實現了有限的教育資源共享，使更多的人獲得了受教育的機會。
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