scanning limit 中文意思是什麼

scanning limit 解釋
掃描限制
  • scanning : n. 1. 細看，細察，審視。2. 【電視】掃描，掃掠,搜索。
  • limit : n. 1. 界限，界線；邊界。2. 極限，限度；限制。3. 〈pl. 〉范圍，范域。4. 限價；限額；賭注限額；獵物限額。vt. 1. 限制，限定。2. 減少。adj. -able
  1. In recent years, radio technology has developed very quickly in our country. however, a radio monitoring receiver with broad frequency scale ( 20 - 3000 mhz ), high scanning rate ( above 1ghz / s ) and whole spectrum real - time display has not developed. some imported monitoring receivers with broad frequency scale can only scan slowly and could n ' t meet actual needs. not only these imported receivers " price is high but also those developed countries usually limit the quantities of imported receivers and related technology is not open

    近年來我國無線電技術水平已經有了很大發展和進步，但對于頻率覆蓋范圍寬（ 20 - 3000mhz ） 、掃描速度快（ 1ghz / s以上）並具備快速全頻段實時頻譜顯示和記錄的無線電監測接收設備，目前我國尚不能生產，國內現在已經進口的寬頻段監測接收機一般也只能進行低速掃描，無法滿足實際的需要。
  2. The topic stream extracted from the network flow can be considered as an indefinite data stream, and because of the limit of the memory, the algorithm used in the frequent item statistics should satisfy two requirements : finding thefrequent item by scanning the data only one pass ; and low space and time costs

    網路流量中提取出的主題流可以看作是一個無限的數據流，統計其中頻繁出現的主題可看作是數據流的頻繁項挖掘問題。由於內存的限制，進行頻繁項統計時所使用的演算法需要具備只掃描一遍即可發現頻繁項和低空間開銷及低時間開銷的特點。
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