step kiln

例句：

1. 1.The new step kiln has greatlyimproved the efficiency of our production line.
   新的步进式窑炉大大提高了我们生产线的效率。
2. 2. The engineers are working ona step kiln design that willreduce energy consumption.
   工程师们正在研究一种步进式窑炉设计，以减少能源消耗。
3. 3. The company is investing ina new step kiln to improveits product quality.
   该公司正在投资一个新的步进式窑炉，以提高其产品的质量。