excerption

基本解釋

The copyright of the words, pictures and video documentation on this website belongs to Yu Changren. Excerption is welcome and please note the derivation!
本網(wǎng)站文字、圖象及視頻資料版權(quán)歸屬于長(zhǎng)仁本人。歡迎轉(zhuǎn)載，請(qǐng)注明出處！
In chapter four, I talked about how do we collect and collate the data used in sedan marketing system, studied the discrimination and the excerption of primary data and secondary data problem.
在第四章，主要是研究在轎車營(yíng)銷數(shù)據(jù)庫(kù)系統(tǒng)中，所需數(shù)據(jù)的分類以及收集、整理等方面的內(nèi)容，研究了初級(jí)數(shù)據(jù)、次級(jí)數(shù)據(jù)的甄別選錄等問(wèn)題。