Drying is a predominant unit process found in biotechnology, ceramic, chemical, agricultural, mineral processing, polymer, food, pharmaceutical, coal processing, textile, wood processing, pulp and paper industries. Drying of an object is required for varied reasons viz., preservation and efficient long-term storage of goods, reduces freight transport costs by lowering its size and weight, eases handling of an object by transforming it into free-flowing solids and anticipated quality of an object can be attained. Generally, drying implies removal of moisture thermally from a wet object. Vaporisation of surface moisture by ambient hot air and transport of internal moisture in object to its surface are two simultaneous processes that takes place during drying. Former one primarily be influenced by external conditions of drying medium viz., temperature. velocity, relative humidity and pressure and of product viz., thickness, area and shape of object exposed to air. While the latter one is a function of drying object such as material properties, moisture content and temperature.
外文書商品之書封，為出版社提供之樣本。實際出貨商品，以出版社所提供之現有版本為主。部份書籍，因出版社供應狀況特殊，匯率將依實際狀況做調整。
無庫存之商品，在您完成訂單程序之後，將以空運的方式為你下單調貨。為了縮短等待的時間，建議您將外文書與其他商品分開下單，以獲得最快的取貨速度，平均調貨時間為1~2個月。
為了保護您的權益，「三民網路書店」提供會員七日商品鑑賞期(收到商品為起始日)。
若要辦理退貨，請在商品鑑賞期內寄回，且商品必須是全新狀態與完整包裝(商品、附件、發票、隨貨贈品等)否則恕不接受退貨。
