求助HTRI里面的专业术语的翻译

hanningangle

第一次接触，看设计院算的结果看不懂，求翻译啊
Thk(Avg)  2.000  mm
Type  SINGLE-SEG.
Shell Cover
Channel Cover
Tubesheet-Floating
Channel or Bonnet
Tubesheet-Stationary
Floating Head Cover
No Passes per Shell
急急急！