| 摘要 |
<p>The insulating body (1) is notable for being largely free of condensation. At least on its surface, it consists of an insulating material made of synthetic resin. Such an insulating body (1) may consist of a porous insulating material having an inhomogeneous density distribution, the core (3) continuously merging into the dense outer skin (2) made of the same insulating material. The insulating material of such insulating bodies may, instead of the pores, also be provided with hollow bodies, it being possible for the pores or hollow bodies to be filled with an insulating gas or a quenching gas. <IMAGE></p> |
