| 摘要 |
<p>Door or partition is at least partly constructed of porous refractory material in the form of a three-dimensional mesh of communicating cells. Specif. most of the door, etc. may be of such material. The material may be metal or ceramic, or further may be of ceramic coated metal. It may be produced by depositing metal or ceramic on a porous substrate, which may be a foam mesh, esp. polyurethane.</p> |
