join blocking的用法和樣例：
例句
- The Six Sigma Black Belt should understand the concepts of randomization and blocking.
西格瑪黑帶應了解隨機化和分塊的概念。 - However, in the compression process of blocking image data, severe boundary artifact will be produced because of boundary extension and coefficient quantification.
但在分塊處理過程中，由于小波變換的邊界擴展及系數量化等原因會產生較嚴重的邊緣贗像效應。
