| 摘要 |
<p>The rifle range shooting butt is of built-up construction, consisting of elastic and universally usable standard modules. These have angle faces and stacking grooves, so that they form no horizontal or vertical passages for the bullets. Each can be a stackable angular body, the elastic material composition being such as to counteract the penetration force of bullets of varying calibre, the lead of the latter being retained in them so that it cannot escape into the ground.</p> |
