firebox tube sheet

例句：

1. 1.The firebox tube sheet is essential for maintaining the temperature in the furnace.
   火箱管板对于保持炉内温度至关重要。
2. 2.The engineers were tasked with replacing the old firebox tube sheet with new ones.
   工程师们被指派用新的代替旧的火箱管板。
3. 3. The manufacturer has announced that they will introduce a new firebox tube sheet design to improve efficiency.
   制造商宣布将推出一种新的火箱管板设计以提高效率。