| 摘要 |
<p>A rack board comprising a main horizontal plate and channel-type reinforcing members and plastic side covers is provided. The main horizontal plate is only cut off at the right and left end portions without forming bent brims there. The plastic side covers are attached to the cut off ends of the main horizontal plate to form the rack board. This arrangement enables the simplification of manufacturing process, the reduction of cost and the effective designing.</p> |
