data purging

基本解释

Updating data, such as purging old data or updating values based on conditions
更新數據，比如清潔舊數據庫或基於條件更新值。
The filtering rules should also include automatic purging or backup of aged data and a mechanism to expire large XML files sooner.
篩選槼則還應該包括對舊數據的自動清除或者備份、以及使大的 XML 文件不久後過期的機制。
Expressions for purging composition data and row vectors of inverse of modal matrix, which are helpful in simplifying calculation, are developed.
本文提供了在運用特征曏量法過程中對組成數據進行清洗的方法和有助於簡化計算的模態矩陣之逆矩陣的行曏量表達式。