ellipsoidal tubesheet

例句：

1. 1. The engineer used an elliptical tubesheet to reduce the heat loss from the furnace.
   工程师使用了一个椭球管板来减少炉子中热量的流失。
2. 2.The construction of this bridge required the use of an elliptical tubesheet to prevent water intrusion.
   建造这座桥梁需要使用椭圆管板以防止水侵入。
3. 3.The elliptical tubesheet was designed to improve the efficiency of the cooling system.
   椭圆管板的设计旨在提高冷却系统的效率。