low circulation ratio boiler

例句：

1. 1. The new low-circulation ratio boiler has significantly improved energy efficiency.
   新型低循环比率锅炉显著提高了能源效率。
2. 2.The low-temperature boiler is designed to operate at a lower temperature range.
   低温锅炉设计用于在较低温度范围内运行。
3. 3.The low-pressure boiler is commonly used in industrial processes to reduce energy consumption.
   低压锅炉常用于工业过程中，以减少能源消耗。