| 摘要 |
<p>A track section (200) includes a body (202) having a coupling portion (204, 206). In one embodiment, the coupling portion includes a projection (262) extending outwardly from the coupling portion and a recess (234) extending inwardly into the coupling portion. In one embodiment, the recess (234) extends downwardly through the coupling portion. In another embodiment, the recess (234) extends from an upper surface of the body to a lower surface of the body.</p> |
