movable tube-sheet

例句：

1. 1.The new design of the movable tube-sheet greatly improves the efficiency of the heat exchanger.
   新型可移动管板设计大大提高了热交换器的效率。
2. 2.During maintenance, the technicians need to replace the movable tube-sheet with a new one.
   在维护过程中，技术人员需要用新的可移动管板替换旧的。
3. 3. The movable tube-sheet is designed to be easily removable for cleaning purposes.
   可移动管板设计为易于拆卸，用于清洁目的。