tertiary storage 中文意思是什麼
tertiary storage
解釋
第三級存儲器-
Taking all sorts of factor like cost and storage capability into account, people mostly use tertiary storage equipment like tape library or optical disk library as the primary storage medium to store massive data. at present, a three layer storage system composed of main memory, disk and tertiary storage has already been the primary storage structure of massive data
從成本和存儲容量等因素綜合考慮，目前人們大都採用將磁帶庫、光盤庫等第三級存儲設備作為海量數據的主要存儲介質，並與主存、磁盤一起構成一個三級的存儲系統作海量數據的存儲結構。 -
Query processing on massive data stored in three layers storage system is studied in this dissertation. queries are divided to three kinds which are d - query, t - query and td - query base on where the data accessed is stored ( on the disk or on the tertiary storage )
根據需要訪問的數據存儲位置的不同（磁盤上還是第三級存儲器上） ，將三級存儲系統中海量數據的查詢分為d - query 、 t - query和td - query三類。 -
Because the data accessed by d - queries is stored on the disk, so we can use the method of conventional database to process them. we mainly study method for processing queries on tertiary storage ( t - query and td - query ) later. first, a new way to process queries on tertiary storage is advanced after
由於d - query訪問的數據存儲在磁盤上，可以採用傳統數據庫處理查詢的方法對其進行處理，因此本文隨后重點研究了第三級存儲器查詢（ t - query和td - query ）的處理方法。 -
In consequence, the hong kong economy has become increasingly service - oriented since the 1980s. reflecting this, the share of the tertiary services sector ( comprising the wholesale, retail and importexport trades, restaurants and hotels ; transport, storage and communications ; financing, insurance, real estate and business services ; community, social and personal services ; and ownership of premises ) in gdp leaped, from 67 per cent in 1981 to 77 per cent in 1991 and further to 87 per cent in 2001
反映這個發展趨勢，第三級服務行業（包括批發、零售、進出口貿易、飲食及酒店業；運輸、倉庫及通訊業；金融、保險、地產及商用服務業；社區、社會及個人服務業；以及樓宇業權）在本地生產總值中所佔的比率劇升，由一九八一年的67 %升至一九九一年的77 % ，於二零零一年續升至87 % 。
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