常見例句雙語例句The copyright of the words, pictures and video documentation on this website belongs to Yu Changren. Excerption is welcome and please note the derivation!本網站文字、圖象及視頻資料版權歸屬于長仁本人。歡迎轉載，請注明出處！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銷數(shù)據庫系統(tǒng)中，所需數(shù)據的分類以及收集、整理等方面的內容，研究了初級數(shù)據、次級數(shù)據的甄別選錄等問題。 返回 excerption