| 摘要 |
<p>Disclosed is an insulating material comprising: a first substrate; a first bubble layer formed on the first substrate and having a plurality of bubbles arranged at a predetermined interval; a second substrate laminated on the first bubble layer; and a second bubble layer formed on the second substrate and having a plurality of bubbles arranged at a predetermined interval, in which the bubbles in the first bubble layer and the bubbles in the second bubble layer are alternately laminated.</p> |
