| 摘要 |
<p>The equipment, for use in the metallurgical industry, consists of a container with supporting lugs, from which projects tube for protecting the cables which connect the control and supply box with its loud-speaker alarm; a metal exterior structure which is strong and load-bearing; an interior structure; a first refractory material structure between exterior and interior structures; and a second refractory material structure between the mass of molten metal and the interior structure.</p> |
