fixed tube sheets

例句：

1. 1. The construction of the new bridgerequired the installation of fixed tube sheets.
   新桥的建设需要安装固定管板。
2. 2. Theengineers carefully checked the quality of thefixed tube sheets before they were used inthe project.
   工程师们在项目开始前仔细检查了固定管板的质量和性能。
3. 3. Thefixed tube sheets are designed to withstandhigh pressure and temperature.
   固定管板设计用于承受高压和高温。