Sectional design

• 分段设计

Sectional design的用法和样例：

例句

1. It is an economy of electricity by applying vertical sectional-area-type design and separate temperature control by forechannel,midchannel,and hindchnnel on the preheater.
   预热器采用从向分段设计，前中后槽单独控温，温度控制自如可省电。