premix burner

例句：

1. 1.The premix burner is designed to mix fuel and air before combustion.
   预混合燃烧器设计用于在燃烧前将燃料和空气混合。
2. 2. This premix burner has a high efficiency and low emissions.
   这种预混合燃烧器效率高且排放低。
3. 3.The premix burner is used in industrial furnaces for heating and power generation.
   预混合燃烧器用于工业炉中进行加热和发电。