知識(shí)貝殼
知識(shí)貝殼
所屬欄目：英漢煙草科技
The ventilation or air dilution of cigarette smoke results in an overallreduction in smoke delivery. Both particulate delivery and vapor-or gasphase deliveries are reduced,generally in direct proportion to the level ofventilation. Diluting air can be intr ......（本文共 2515 字 , 2 張圖） [閱讀本文] >>