There are three kinds of drying systems: hot air drying, dehumidifying drying, and natural drying;however, hot air drying is the most popular drying system.

• 目前乾燥作业有热风乾燥、除湿乾燥和自然乾燥等方式，然而热风乾燥机是最广泛使用的乾燥系统。