ldb 中文意思是什麼
ldb
解釋
低曳彈-
Root system characteristics of tamarix ramosissima ldb. on terrace embankments in two types of stand conditions
兩種立地條件梯田埂坎紅柳根系特徵研究 -
The results showed that the drought resistant capability decreased in order of tamarix ramosissima ldb., platycladus orientalis and sympegma regelii
結果表明， 3樹種抗旱性大小順序依次為：紅柳側柏合頭草。 -
The process of target identification is formulated, which involved feature extraction, dimension reduction and classification. for solving the overlap of each subspace of a wavelet library in frequency, there are two approaches that are best basis ( bb ) and local discriminant bases ( ldb ). their measure and searching algorithm were researched
從數學的角度描述了目標識別過程，依據cwt和多分辨分析表示信號的特點，提出了以信號尺度?小波能量譜、時間?小波能量譜、多分辨分解系數和各子帶能量強度為特徵的方法。 -
In multidatabase, access to global view will be decomposed to several sub - operations to several ldb, and perhaps also need data schema translation and query processing
在多庫系統中，對全局視圖的存取操作要分解為針對多個ldb的子操作，可能還要對數據模式及查詢語言進行轉換。 -
If each accessing to global view must be translated into accessing to ldb, the cost will be very expensive. so there are materialized views in most multidatabase
如果每一次對全局視圖的訪問都要轉換為對底層數據庫的訪問，代價是很昂貴的，所以多庫系統中一般都保持一個物理的全局視圖。
分享友人