知識(shí)貝殼
知識(shí)貝殼
所屬欄目：英漢煙草科技
Topping,a common practice in tobacco production,is an operationof removing terminal inflorescence and sometimes several top leaves in order to redirect the energy for leaf development to a desired physical andchemical property. Subsequently,because of the ......（本文共 2109 字 ） [閱讀本文] >>