所属栏目:英汉烟草科技
Only 60%~65% of the weight of tobacco bought at auction finds itsway into shred in the final cigarette product. By far the largest by-product is the stem or mid-rib that held the leaf to the plant stalk. The stemmakes up 20%~25% of the leaf weight (Table ......(本文共 2648 字 , 2 张图) [阅读本文] >>