| 摘要 |
<p>The protective screeen is intended for use in the vicinity of transport installations in quarries and the like. It consists of a chain meshwork having a number of chain rings (1, 2) in the plane of the chain (4). The screen may have rings (1) at its edges, each of which is joined to two individual links or lengths (4), except the corner rings (1), which two links or lengths (4) are in turn joined to rings (2), each joined to four individual links or lengths (4).</p> |
