| 摘要 |
<p>An expansion joint for a roadway has the gap between sections divided into part-gaps by a number of bars, and cross-pieces each connected to one of the bars and all connected between a pair of joint members to be secured to the two parts of the roadway ensure that as the gap changes in size due to expansion and contraction of the roadway, the bars move to keep the part-gaps of equal size.</p> |
