primary navigation 中文意思是什麼

primary navigation 解釋
沿航線導航
  • primary : adj 1 第一的，最初的，初級的；初等的；基本的；基層的。2 主要的，為首的，第一位的。3 原始的，根本...
  • navigation : n. 1. 航行；導航；領航；航海[航空]術。2. 〈集合詞〉船。3. 〈古語〉航路；海上交通。adj. -al
  1. When a query on the relational views is issued, it is repeatedly rewritten using the rules. this process generates number of navigation plans to compute the query ; the cost of these plans is then estimated based on a simple cost model that takes network accesses as the primary cost parameter. in this way, an efficient execution plan is selected for processing the query

    當根據關系視圖發出一個查詢時，它被重復的使用重寫規則來重寫，這個過程產生大量的導航方案來運算查詢。這些方案的代價是根據代價模型來評估的。代價模型是用網路訪問作為原始的代價參數。
  2. The first chapter of this paper analyses the background and meaning of the establishment of disciplines navigation system for network resources. with the rapid increase of network academic information resource, search engine as the web primary retrieval tool can " t meet the retrieval request of specialty information resources ; traditional cataloging techniques can " t meet the needs of magnanimous network academic resources ; most of the " navigation of networks " established by libraries are the simple link of websites. it lacks the necessary revelation and evaluation of resources content

    本文在第1章分析了網路資源學科導航系統建設的背景和意義：隨著網路學術信息資源的飛速增長，作為web主流檢索工具的搜索引擎難以高效、準確、全面地完成專業信息資源的檢索請求；傳統編目技術也無力承擔海量網路學術資源編目的需求；圖書館所建的「網海導航」多數為對網站（頁）的鏈接，缺乏對資源內容必要的揭示與評價；國內對網路學術資源標準化的研究也相對滯後於國外。
  3. Eplrs ( enhanced position location reporting system ) is an integrated system providing communication, localization and identification functions and with navigation and localization functions as the primary

    Eplrs系統（增強型定位報告系統）是以導航、定位功能為主，集通信、導航定位、識別於一體的綜合性系統。
  4. Taxes, regulation, and subsidies were all used as mercantile policies, but the primary ones that affected the colonies were the navigation acts

    稅收、法規以及補貼均為重商主義政策手段，但影響殖民地的主要政策措施為《航海條例》 。
  5. If you use the navigation buttons to move through the records of a database table on a data form, this exception may be thrown with the additional information, " column column does not allow nulls. " this behavior occurs because the primary key or the " not null " column of the database table was not selected in the data form wizard

    如果使用導航按鈕在數據窗體上的數據庫表的記錄之間移動，則可能會引發此異常，並顯示附加信息： 「列column不允許空值。 」此行為的發生是由於在「數據窗體向導」中未選擇數據庫表的主鍵或「非null 」列。
  6. It has compared all kinds of advantages and disadvantages about navigation systems. then a primary plan was developed and demonstrated. in allusion to the lower cost and little solidity for vehicle installed devices, the dominant design project for this system was brought forward and has been done argumentation

    本論文首先對國內外的車輛導航系統的研究和應用現狀進行了介紹，比較了各種導航定位系統的優、缺點，並且針對車載臺成本高、體積小、精度要求較高等特點，提出了本系統的總體方案設計並進行了方案論證。
  7. In the fifth part, the paper introduces the present work designing and testing of gps function in pcm, presents the primary design of navigation component geography information based on windows ce operation system and gps. at last, the whole paper is summed up

    第五部分，介紹了導航組件的研究，包括兩部分工作，一是在powercommap中添加導航功能，二是本著組件gis的研究思路，在基於windowsce操作系統的掌上電腦中，設計實驗了以gps導航功能為主的組件化gis 。
  8. In this essay, i give the hardware and software design in detail of this integrated navigation instrument. firstly, i use two charpters to analyse the characters of the required data signals, including the primary principle of transmitting gps data signal and the standard of decoding it

    文中給出了該組合導航儀軟硬體的詳細設計，首先分析了導航所需的各種數據信號的特性，分析了gps數據信號進行傳輸的基本原理和導航電文的解算方法，並給出了影響各種信號的狀態因素。
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