| 摘要 |
<p>The frame, having flat vertical front and rear faces (Pva, Pvp), is assembled from a series of curved modules (20, 74, 84, 86) connected by straight cross-pieces (22). The modules are assembled with the aid of nut and bolt couplings through holes in their ends, the bolts carryiing rollers (68) which allow the containers in the frame to be rotated so their outlets are positioned for complete emptying. The lower modules are connected by straight bars (64) with supporting feet (66).</p> |
